DMRC Electronics Engineering Paper-1 2014

DMRC Electronics Engineering Paper-1 2014 - Question 1

Report

What of the following is the lightest in weight?

A

M

B

N

C

P

D

O

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 2

Report

Q is lighter in weight than which of the other two articles:

A

M, P

B

M, N

C

O, M

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 3

Report

Which of the following articles is the heaviest in weight?

A

N

B

O

C

M

D

Q

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 4

Report

The difference between the simple and compound interest on a certain sum for 3 years at 10% p.a. is ` 46.5, then which of the following is the sum?

A

₹ 1600

B

₹ 1500

C

₹ 1700

D

₹ 1800

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 5

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By selling 18 chocolates, a vendor loses the selling price of 2 chocolates. Find his loss percent:

A

8%

B

12%

C

15%

D

10%

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 6

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The length, breadth and height of a room in the shape of a cuboid is increased by 10%, 20% and 50% respectively. Find the percentage change in the volume of the cuboid:

A

65%

B

75%

C

85%

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 7

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Keshav is travelling by car at the rate of 40 km/h. After 80 km he rests for 20 minutes. How long will he take to cover a distance of 240 km:

A

6 hours 50 minutes

B

6 hours 40 minutes

C

7 hours

D

7 hours 20 minutes

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 8

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A job has to be completed by 12 boys in 15 days. If three boys are absent from the first day, then by what percentage should the remaining boys increase their rate of working to complete the job?

A

$$22\frac{1}{3}\%$$

B

$$22\frac{1}{2}\%$$

C

$$33\frac{1}{3}\%$$

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 9

Report

The income of Anil, Firoz and Ketan are in the ratio 7:9:12 and their spending are in the ratio 8:9:15. If Anil saves 1/4 of his income, then the saving of Anil, Firoz and Ketan are in the ratio:

A

59:99:69

B

56:99:69

C

56:96:69

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 10

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Ramesh started a business with a capital of ₹ 2100. After 4 months he admitted another partner Sujeet. What amount should Sujeet put in, So that the profit may be divided equally at the end of the year?

A

₹ 3750

B

₹ 3350

C

₹ 3150

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 11

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Pointing to a photograph of a boy Lokesh said, “He is the son of the only son of my mother”. How is Lokesh related to the boy?

A

Uncle

B

Father

C

Grand father

D

Brother

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 12

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If ‘dog’ is ‘cat’, ‘cat’ is ‘rat’, ‘rat’ is ‘mat’, ‘mat’ is ‘cow’, then which one of the following is not an animal?

A

Mat

B

Dog

C

Rat

D

Cow

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 13

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Complete the series by choosing the correct option.
ELFA, GLHA, ILJA, _____, MLNA

A

KLMA

B

KLLA

C

KMLA

D

LKLA

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 14

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In some cars, there is the warning on external rear view mirrors “Objects are closer than they appear in mirror”. What type of mirrors are used in such cases?

A

Plane;

B

Convex;

C

concave;

D

None of these.

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 15

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Equinox is the position when sub solar point fall’s on:

A

Equator

B

Cancer

C

Capricorn

D

Pole

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 16

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The super computer of India Param Yuva - II has been developed by:

A

Tata Consultancy Services

B

Center for Development of Advanced Computing

C

Reliance Info Comm.

D

National Informatics Center

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 17

Report

Which one is not an epic?

A

Beowulf

B

Illiad

C

Ramayana

D

Canterbury Tales

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 18

Report

In history, the name of prince Khurram, came to be known as:

A

Jahangir

B

Shahjahan

C

Aurangzeb

D

Akbar

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 19

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Public Accounts Committee is constituted ......... year and it consists of not more than ......... members consisting of ......... members elected by Lok Sabha and not more than ......... members from Rajya Sabha. ......... was appointed the chairman of Public Accounts Committee recently:

A

Every, 22, 15, 7, K.V. Thomas

B

Every fifth, 18, 13, 5, M.M. Joshi

C

Every second, 25, 18, 7, L.K. Advani

D

Every, 20, 15, 5, Arun Jaitley

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 20

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Identify among the following the Chinese investigating Journalist who was awarded the prestigious ‘Ramon Magsaysay Awards for 2014:

A

Saur Marlina Manurang

B

Wang Canfa

C

Hu Shuli

D

Fu Qiping

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 21

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This is a ground penetrating radar and will provide centimeter scale resolution of the geologic structure of the subsurface. This is among the seven selected payloads that
will be sent to Mars 2020 rover mission:

A

MEDA

B

RIMFAX

C

SHERLOC

D

MOXIE

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 22

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“Vistar” is the brand name of:

A

Newly launched 4G mobile phone

B

Newly launched Airlines

C

Newly launched Housing Scheme by Union Govt. for BPL families

D

Newly launched Health Awareness Scheme by Govt. of India

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 23

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The film, ‘Bhaag Milkha Bhaag’, based on the life of Milkha Singh, an ace runner, was directed by the same person who directed

A

The Bandit Queen

B

Pan Singh Tomar

C

Rang De Basanti

D

Lagaan

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 24

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Identify the wrong match:

A

Haldia Port : West Bengal

B

Tuticorin Port : Tamilnadu

C

Kandla Port : Gujarat

D

Paradip Port : Andhra Pradesh

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 25

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Sanskrit Granth ‘Hitopedesh’ was written by:

A

Chaitanya

B

Narayan Pandit

C

Kalidas

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 26

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15 Children are standing in a row facing North. Ravi is to the immediate left of Prabha and is 8th from the left end. Arjun is second from the right end. Which of the following statements is not ture?

A

Prabha is 7th from the right end

B

There are four children between Prabha and Arjun

C

There are five children between Ravi and Arjun

D

Arjun is 13th from the left end

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 27

Report

The proposals for the partition of India and Pakistan were contained in the:

A

Cripps Mission Proposals

B

Cabinet Mission Proposals

C

Mountbatten Plan of 3rd June 1947

D

None of the above

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 28

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A card is drawn from a pack of well shuffled deck of 52 cards and its probability is $$\frac{1}{4}$$ then which of the following is possible:

A

Getting a “card of hearts”

B

Getting a black card

C

Getting a Jack

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 29

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A candidate for election to the Rajya Sabha must be not less than:

A

35 Years of age

B

25 Years of age

C

30 Years of age

D

40 Years of age

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 30

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Curie point is a temperature at which:

A

Matter becomes radio active

B

A magnetic material undergo a sharp change in their magnetic properties

C

A metal loses conductivity

D

Transmutation of metal occurs

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 31

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Gross National Product (GNP) of a country is sum of the market value of all goods and services produced in a year:

A

Plus export Earnings

B

Plus Market value of imports

C

Minus foreign aid

D

Plus net income from abroad

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 32

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60% of the students in a school are boys. If the number of girls in the school is 300, then the number of boys is:

A

500

B

300

C

450

D

750

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 33

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It is required to get 40% marks to pass an exam. A candidate scored 200 marks and failed by 8 marks. What were the maximum marks of that exam:

A

530

B

540

C

520

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 34

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In a division sum, a student took 63 as divisor instead of 36. His answer was 24. The correct answer is:

A

36

B

42

C

32

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 35

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The perimeter of an isosceles triangle is 42 cm and its base is $$1\frac{1}{2}$$ times each of the equal sides. Find the length of each side of triangle:

A

12 cm, 12 cm, 18 cm

B

6 cm, 6 cm, 9 cm

C

18 cm, 18 cm, 24 cm

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 36

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A quadrilateral with a pair of opposite sides parallel is called:

A

Parallelogram

B

Trapezium

C

Polygon

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 37

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Find the total surface area of a cylinder having radius of the base 14 cm and height 30 cm.

A

3872 $$cm^2$$

B

4872 $$cm^2$$

C

3782 $$cm^2$$

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 38

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A sum of ₹ 8,500 is to be divided among 5 men, 6 women and 8 boys in the ratio of 10:7:1. The share of one woman will be:

A

₹ 85

B

₹ 385

C

₹ 850

D

₹ 595

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 39

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The average weight of 8 persons is increased by 2.5 Kg. This happens when one of the eight who weighed 56 Kg is replaced by a new man. The new man weighs:

A

61 kg.

B

70 kg.

C

76 kg.

D

80 kg.

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 40

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If A = 26, SUN = 27 then CAT = ?

A

24

B

57

C

58

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 41

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Anuraag is 40 m South-West of Vikram. Chiraag is 40 m South-East of Vikram, then Chiraag is in which direction of Anuraag?

A

North-East

B

South

C

East

D

South-East

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 42

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In a certain code, BRAIN is written as $$∗ \% \div \# \times$$ and TEAR is written as $$+ \$ \div \%$$. How is NEAR written in that code?

A

$$\$ \times \# \%$$

B

$$\div + \$ \%$$

C

$$\times \$ \div \#$$

D

$$\times \$ \div \%$$

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 43

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Complete the following series.
3, __, 17, 24, 31, __, 45, __

A

10, 36, 50

B

10, 37, 56

C

10, 38, 52

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 44

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How many times from 4 AM to 4 PM the hands of clock are at right angles?

A

24

B

20

C

22

D

18

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 45

Report

Which of the following diagrams indicates the best relation between bakery, cake and biscuit?

A

B

C

D

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 46

Report

Which one of the following statements is correct? Digital modulation techniques are used in satellite communication systems since:

A

They are easier to handle

B

Large bandwidth utilization is possible

C

They have a higher spectral efficiency

D

They are less prone to interference

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 47

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How many bits are required to encode 32 level PCM:

A

6

B

5

C

4

D

3

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 48

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The noise is more dominant in which of the following:

A

PAM

B

PWM

C

PPM

D

FSK

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 49

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The phase velocity of wave propagating in a hollow metal wave guide is:

A

Greater than the velocity of the light in free space

B

Less than the velocity of the light in free space

C

Equal to the velocity of the light in free space

D

Equal to the group velocity

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 50

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The magnitude of the open-circuit and short circuit input impedance of a transmission line are 100 ohm and 25 ohm respectively. The characteristic impedance of line is:

A

25 ohm

B

50 ohm

C

75 ohm

D

100 ohm

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 51

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The line of sight communication requires transmit and receive antenna to face each other. If the transmit antenna is vertically polarized, for the best reception the receive
antenna should be:

A

Horizontally polarized

B

Vertically polarized

C

At $$45^\circ$$ with respect to the horizontal polarization

D

At $$45^\circ$$ with respect to the vertical polarization

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 52

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A network contains linear resistance and ideal voltage source. If the value of all the resistors are doubled, then the voltage across each resistor is:

A

Halved

B

Doubled

C

Increased by four times

D

Not changed

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 53

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Twelve 1 ohm resistances are used as edge to form a cube. The resistance between two diagonally opposite corners of the cube is:

A

$$\frac{5}{6}$$ ohm

B

$$1$$ ohm

C

$$\frac{6}{5}$$ ohm

D

$$\frac{3}{2}$$ ohm

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 54

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An eight bit digital data 10101100 is fed to an ADC. The reference voltage is +10V. The analog output voltage will be:

A

1.05 V

B

6.74 V

C

10.10 V

D

5.15 V

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 55

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A series RLC circuit has a resonant frequency of 1 KHz and a quality factor Q = 100. If each of the R,L and C is doubled from its original value, the new Q of the circuit is:

A

25

B

50

C

100

D

200

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 56

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The input to a coherent detector is DSB-SC signal plus noise. The noise at the detector output is:

A

The in-phase component

B

The quadrature-component

C

Zero

D

The envelope

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 57

Report

Gunn diode is a:

A

Negative resistance device

B

Positive resistance device

C

High noise device

D

Low frequency device

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 58

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The intrinsic carrier concentration of silicon sample at $$300^\circ K$$ is $$2.5 \times 10^{16} /m^3$$. If after doping, the number of majority carriers is $$5 \times 10^{20} /m^3$$ , the minority carrier density is:

A

$$1.25 \times 10^{12} /m^3$$

B

$$0.125 \times 10^{12} /m^3$$

C

$$2.5 \times 10^{20} /m^3$$

D

$$0.5 \times 10^{4} /m^3$$

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 59

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The unit of $$\triangledown \times H$$ is:

A

Ampere

B

Ampere/meter

C

Ampere/meter$$^2$$

D

Ampere-meter

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 60

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A PIN diode is:

A

A metal semiconductor point-contact diode

B

A microwave mixer diode

C

Often used as a microwave detector

D

Suitable for use as a microwave switch

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 61

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11001, 1001 and 111001 correspond to the 2’s complement representation of which one of the following sets of number?

A

25, 9 and 57 respectively

B

-6, -6 and -6 respectively

C

-7, -7 and -7 respectively

D

-25, -9 and -57 respectively

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 62

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To couple a coaxial line to a parallel wire line, it is best to use a:

A

A slotted line

B

Balun

C

Directional coupler

D

Quarter wave line transformer

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 63

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Which of the following is used extensively where lowest power consumption is necessary?

A

CMOS

B

NMOS

C

PMOS

D

Any of the above

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 64

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Reflex klystron is a:

A

Low power generator

B

High power oscillator

C

Low gain amplifier

D

Not an oscillator

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 65

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If the radiated power of AM transmitter is 10 KW, the power in the carrier for modulation index of 0.6 is nearly:

A

8.24 KW

B

9.26 KW

C

8.47 KW

D

9.6 KW

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 66

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The current through 8 ohms branch is:

A

1 A

B

0.5 A

C

1.5 A

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 67

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JFET in properly biased condition acts as a:

A

Current controlled current source

B

Voltage controlled voltage source

C

Voltage controlled current source

D

Impedance controlled current source

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 68

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The circuit shown in figure is best described as a:

A

Bridge rectifier

B

Ring modulator

C

Frequency discriminatory

D

Voltage doubler

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 69

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Which amplifier will be preferred for highest gain?

A

Darlington pair

B

Cascade amplifier

C

Cascode amplifier

D

Depends on the circuitry

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 70

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The Boolean expression for the truth table shown is:

A

$$B(A + C)(\overline{A} + \overline{C})$$

B

$$B(A + \overline{C})(\overline{A} + C)$$

C

$$\overline{B}(A + \overline{C})(\overline{A} + C)$$

D

$$\overline{B}(A + C)(\overline{A} + \overline{C})$$

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 71

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Without any additional circuitry, an 8:1 MUX can be used to obtain:

A

Some but not all Boolean functions of 3 variables

B

All function of 3 variables but none of 4 variables

C

All functions of 3 variables and some but not all of 4 variables

D

All functions of 4 variables

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 72

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The resolution of a potentiometer should be:

A

Zero

B

Low

C

High

D

Infinite

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 73

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Negative feedback in amplifier:

A

Improves the SNR at input

B

Improve SNR at output

C

Reduces distortion

D

Decreases bandwidth

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 74

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Spectral density expresses:

A

Average voltage

B

Average current

C

Average power in a waveform as a function of frequency

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 75

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Which of the following is used as a data selector?

A

Encoder

B

Decoder

C

Multiplexer

D

De-multiplexer

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 76

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If a signal x(n)=x(-n), then it is called ____ signal:

A

Odd

B

Energy

C

Power

D

Even

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 77

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The response of an LTI/LSI system is given by the _______ of input and impulse response:

A

Convolution

B

Correlation

C

Superposition

D

None

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 78

Report

Companders are used in communication systems to:

A

Compress bandwidth

B

To improve frequency response

C

To improve signal to noise ratio

D

None of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 79

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$$I_{CBO}$$ ICBO in a transistor can be reduced by reducing:

A

IB

B

VCC

C

IE

D

Temperature

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 80

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Light is confined within the core of a simple optical fiber by:

A

Refraction.

B

Total internal reflection at the outer edge of the cladding.

C

Total internal reflection at the core cladding boundary.

D

Reflection from the fiber's plastic coating.

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 81

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The complement of AB+BC’+CD’ is:

A

A’CD+B’C’+B’D

B

A’C’+BC+AB’D’

C

AC+BC+ABD

D

A’C’+B’C’+A’B’D’

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 82

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The following expression when simplified will become XY(X’YZ +X’Y’Z’+XY’Z)

A

0

B

1

C

-1

D

X

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 83

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In a PCM system of telemetry, the quantization noise depends on:

A

The sampling rate and quantization level

B

The sampling rate only

C

The number of quantization level

D

Information provided is not sufficient

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 84

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In PCM system, if we increase the quantization levels from 2 to 8, the relative bandwidth requirements will:

A

Be doubled

B

Remain same

C

Be tripled

D

Becomes eight times

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 85

Report

The modulation system inherently most noise resistant is:

A

Frequency modulation

B

Pulse width modulation

C

Pulse code modulation

D

Phase modulation

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 86

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Which of the following microphone does not require polarizing current?

A

Crystal microphone

B

Condenser microphone

C

Carbon microphone

D

All of the above

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 87

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The large signal bandwidth of an opamp is limited by its:

A

Loop gain

B

Slew rate

C

Output impedance

D

Input frequency

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 88

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In an unclocked R-S flip flop made of NOR gates, the forbidden input condition is:

A

R=0, S=0

B

R=1, S=0

C

R=0, S=1

D

R=1, S=1

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 89

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A phase-locked loop (PLL) is a feedback circuit consisting of a:

A

Phase detector.

B

Low-pass filter.

C

VCO.

D

All of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 90

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A 339 IC is an example of a fourteen-pin DIP that can be made to function as a ________:

A

Comparator

B

555 timer

C

D to A converter

D

Ladder network

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 91

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Filters with the ______ characteristic are useful when a rapid roll-off is required because it provides a roll-off rate greater than -20/dB/decade/pole:

A

Butterworth

B

Chebyshev

C

Bessel

D

Elliptical

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 92

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Which of the following applications include a phase-locked loop (PLL) circuit?

A

Modems

B

AM decoders

C

Tracking filters

D

All of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 93

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Rectification efficiency of a fullwave rectifier without filter is nearly equals to:

A

51%

B

61%

C

71%

D

81%

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 94

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What is the voltage resolution of an 8- stage ladder network?

A

$$\frac{V_{ref}}{128}$$

B

$$\frac{V_{ref}}{256}$$

C

$$\frac{V_{ref}}{512}$$

D

$$\frac{V_{ref}}{1024}$$

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 95

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In which region is the operating point stable in tunnel diodes?

A

Negative-resistance

B

Positive-resistance

C

Both negative- and positive-resistance

D

Neither negative- nor positiveresistance

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 96

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Which of the following diodes is limited to the reverse-bias region in its region of operation?

A

Schottky

B

Tunnel

C

Photodiode

D

Rectifier

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 97

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Which of the following semiconductor materials is (are) used for manufacturing solar cells?

A

Gallium arsenide

B

Indium arsenide

C

Cadmium sulfide

D

All of these

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 98

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If $$Y(s) = \frac{s^2 + 1}{s}$$, the network has:

A

1 H inductor and 1 F capacitor in parallel

B

1 H inductor and 1 F capacitor in series

C

1 H inductor and 1 Ω resistor in series

D

1 H inductor and 1 Ω resistor in parallel

View Solution

DMRC Electronics Engineering Paper-1 2014 - Question 99

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When the temperature of a doped semiconductor is increased, its conductivity

A

Decreases

B

Increases

C

Does not change

D

Increases or decreases depending on whether it is p-type or n-type

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DMRC Electronics Engineering Paper-1 2014 - Question 100

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Schering bridge is used to measure

A

Frequency

B

Inductance

C

Capacitance

D

Mutual Inductance

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DMRC Electronics Engineering Paper-1 2014 - Question 101

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A step voltage E is applied to a series R-L circuit. The rate of change of current is maximum at t = _:

A

Zero

B

Infinity

C

L/R

D

R/L

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DMRC Electronics Engineering Paper-1 2014 - Question 102

Report

PLAs, CPLDs, and FPGAs are all which type of device?

A

SLD

B

PLD

C

EPROM

D

SRAM

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DMRC Electronics Engineering Paper-1 2014 - Question 103

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Holding current for an SCR is best described as:

A

The minimum current required for turn off

B

The current required before an SCR will turn on

C

The amount of current required to maintain conduction

D

The gate current required to maintain conduction

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DMRC Electronics Engineering Paper-1 2014 - Question 104

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What type of temperature coefficient do thermistors have?

A

Positive

B

Negative

C

Either positive or negative

D

None of these

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DMRC Electronics Engineering Paper-1 2014 - Question 105

Report

In a microprocessor:

A

One machine cycle is equal to one clock cycle

B

One clock cycle consists of several machine cycles

C

One machine cycle consists of several clock cycles

D

One machine cycle is always less than one clock cycle

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DMRC Electronics Engineering Paper-1 2014 - Question 106

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In 8085 microprocessor with memory mapped I/O which of the following is true?

A

I/O devices have 16 bit addresses

B

I/O devices are accessed during IN and OUT instructions

C

There can be a maximum of 256 input and 256 output devices

D

Logic operations can not be performed

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DMRC Electronics Engineering Paper-1 2014 - Question 107

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A blank EPROM has:

A

All bits set to logical 0

B

All bits set to logical 1

C

Half the total number of bits set to 0 and remaining half to logical 1

D

Either A. or B.

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DMRC Electronics Engineering Paper-1 2014 - Question 108

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One application of a digital multiplexer is to facilitate:

A

Code conversion

B

Parity checking

C

Parallel-to-serial data conversion

D

Data generation

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DMRC Electronics Engineering Paper-1 2014 - Question 109

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The coefficient of coupling between two coils is 0.45. The first coil has an inductance of 75 mH and the second coil has an inductance of 105 mH. What is the mutual inductance between the coils?

A

3.54 mH

B

7.88 mH

C

39.9 mH

D

189.3 mH

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DMRC Electronics Engineering Paper-1 2014 - Question 110

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The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits:

A

Increase ripple delay

B

Add a 1 to complemented inputs

C

Reduce propagation delay

D

Determine sign and magnitude

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DMRC Electronics Engineering Paper-1 2014 - Question 111

Report

To multiply a number by 8 in 8085 we have to use RAL instruction:

A

Once

B

Twice

C

Thrice

D

Four times

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DMRC Electronics Engineering Paper-1 2014 - Question 112

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An energy signal has G(f) = 10. Its energy density spectrum is:

A

10

B

100

C

50

D

20

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DMRC Electronics Engineering Paper-1 2014 - Question 113

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Feedback factor at the frequency of oscillation of a Wien bridge oscillator is:

A

3

B

$$\frac{1}{3}$$

C

$$\frac{1}{29}$$

D

$$\frac{3}{29}$$

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DMRC Electronics Engineering Paper-1 2014 - Question 114

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A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 1010:

A

0.3125 V

B

3.125 V

C

0.78125 V

D

-3.125 V

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DMRC Electronics Engineering Paper-1 2014 - Question 115

Report

A quarter wave line open circuited at far end behaves as:

A

Inductance

B

L and C in parallel

C

Capacitance

D

L and C in series

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DMRC Electronics Engineering Paper-1 2014 - Question 116

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In a directional coupler:

A

Isolation (dB) equals coupling plus directivity

B

Coupling (dB) equals isolation plus directivity

C

Directivity (dB) equals isolation plus coupling

D

Isolation (dB) equals (coupling) (directivity)

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DMRC Electronics Engineering Paper-1 2014 - Question 117

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In a circular waveguide the dominant mode is:

A

$$TE_{01}$$

B

$$TE_{11}$$

C

$$TE_{20}$$

D

$$TE_{21}$$

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DMRC Electronics Engineering Paper-1 2014 - Question 118

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In a klystron amplifier the input cavity is called:

A

Buncher

B

Catcher

C

Pierce gun

D

Collector

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DMRC Electronics Engineering Paper-1 2014 - Question 119

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A loss less line of characteristic impedance $$Z_0$$ is terminated in pure reactance of $$-jZ_0$$ value. VSWR is

A

10

B

2

C

1

D

Infinity

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DMRC Electronics Engineering Paper-1 2014 - Question 120

Report

The velocity factor of a transmission line depends on:

A

Temperature

B

Skin effect

C

Relative permittivity of dielectric

D

None of these

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