SSC JE Mechanical Engineering 25th Jan 2018 Shift-2

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For the following questions answer them individually
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SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 29

W introduced herself to U by saying that you are the daughter-in-law of my husband's father's wife. How are U and W related to each other?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 38

A trekker walks 3 km East, then he turns South and walks for 2 km, then he turns West and walks for 8 km, then he turns to his right and walks for 2 km. Where is he now with respect to his starting position?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 39

Two village women start from the same well. The first woman walks 5 km East, then turns to her right and walks 8 km to reach her house. In the meanwhile the second woman walks 7 km South, then she turns West and walks 3 km, then she turns to her left and walks 1 km to reach her house. Where is the second woman's house with respect to the first woman's house?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 40

In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.
Statement I: All flowers are paper
Statement II: Some flowers are organic
Conclusion I: Some paper is organic
Conclusion II: All organic is paper

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 41

In the question three statements are given, followed by three conclusions, I, II and III. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.
Statement I: All Highways are lanes
Statement II: Some streets are highways
Statement III: All streets are expressways
Conclusion I: Some expressways are lanes
Conclusion II: Some lanes are streets
Conclusion III: Some expressways are highways

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SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 50

A word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as shown in the given two matrices. The columns and rows of Matrix-I are numbered from 0 to 4 and that of Matrix-II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, for example 'B' can be represented by 43, 31 etc and 'X' can be represented by 76, 96 etc. Similarly, you have to identify the set for the word 'KEPT'.

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SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 111

The classification of the toothed wheels is shown according to the position of the axes of the shaft. Choose the type of toothed wheels which doesnot comes under this classification.

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 118

The term G and @ is also known as ............ and .......... respectively in the torsion equation $$\frac{T}{J} = \frac{\tau}{R} = \frac{G \theta}{L}$$

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 119

The value of the coefficient of friction between the box and the surface is 0.20 which prevents the box from sliding. If the box decelerates with ‘a’ (m/s$$^2$$), then calculate the deceleration, if the force applied is ‘ma’.

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SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 121

The Young’s modulus and thermal stress developed in a steel rod of diametre 2 cm and length 2 m is 200 GPa and 288 MPa respectively, This experiences heating from temperature $$30^\circ C$$ to $$150^\circ C$$ and the rod has been restricted in its original position. Calculate the value of coefficient of thermal expansion.

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 123

Which of the following column has the formulafor the Euler's buckling load as $$\frac{\pi^2 El}{L^2}$$

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 130

The formula for the extension in the tapered rod of length l and tapered diametre of $$D_1$$, and $$D_2$$, under the axial tensile load is ............

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 133

Which equation correctly represents the steady flow process where enthalpy, work and heatare in kJ/kg, velocity is in m/s and gravitational acceleration is in m/s$$^2$$?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 134

A Camot heat pump is used to maintain a room at a temperature of $$T^\circ C$$ the initial temperature of the room was $$-10^\circ C$$ lf the power requirement of the pump is 20 kW and the heat provided is 150 KW. Whatwill be the value of T ?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 135

Which of the following equation is true for work required by heat pump?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 138

Which equation is the CORRECT representation of the process shown below?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 140

In a P-T diagram for pure substance, the melting line has lowestinclination with respect to the positive horizontal axis representing temperature for which type of substance?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 148

If two engines $$E_1$$ and $$E_2$$ are working in the same temperature ranges. The $$E_1$$, is a reversible engine, whereas $$E_2$$ is an irreversible engine. Which of the following is CORRECT for the efficiency of the engines?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 157

A transfer machine

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SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 165

General energy equation for a steady flow system is:
(a) $$H_1 + \frac{V_1^2}{2gj} + \frac{Z_1}{J} + Q = \frac{V_2^2}{2gJ} + Losses$$
(b) $$H_1 + \frac{V_1^2}{2gj} + \frac{Z_1}{J} + Q = \frac{V_2^2}{2gJ} + workdone + Losses$$
(c) $$H_1 + \frac{V_1^2}{2gj} + \frac{Z_1}{J} + Q = H_2 + \frac{V_2^2}{2gJ} + \frac{V_2}{J} + workdone + Losses$$
(d) $$H_1 + \frac{V_1^2}{2gj} + \frac{Z_1}{J} + Q = H_2 = \frac{V_2^2}{2gJ} + \frac{Z_1}{J} + workdone + Losses$$

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 168

Zeroth law of thermodynamics states that

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 169

The heat absorbed or rejected during a polytropic process is equal to:

(a) $$\left(\frac{\gamma - n}{\gamma - 1}\right)^{\frac{1}{2}} \times workdone$$

(b) $$\left(\frac{\gamma - n}{n - 1}\right)^{\frac{1}{2}} \times workdone$$

(c) $$\left(\frac{\gamma - n}{\gamma - 1}\right) \times workdone$$

(d) $$\left(\frac{\gamma - n}{\gamma - 1}\right)^2 \times workdone$$

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 186

The velocity potential function is given by an expression $$\psi = -\frac{xy^3}{3} - x^2 + \frac{x^3y}{3} + y^2$$ The velocity component in X-direction is:
(a) $$xy^2 - \frac{x^3}{3} - 2y$$
(b) $$\frac{y^3}{3} + 2x - x^2y$$
(c) $$3x^2y + 2x - xy^2$$
(d) $$x^3y^2 + 2x^2 - y^2x$$

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 187

When is Bernoulli's equation applicable between any twopoints in a flow field?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 188

In an experiment, the following shear stress-time rate of shear Strain values are obtained for a fluid:
Time rate of shear strain (1/s): 023 4
Shear stress (kPa) : 0 1.4 2.6 4
How can the fluid be classified?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 190

Consider the following statements regarding a pathline in fluid flow
1. A path line is a line traced by a single particle over a time interval.
2. A path line showsthe positions of the sameparticle at successive time instants.
3. A path line showsthe instantaneous positions of a number ofparticles, passing through a common point, at some previous time instants.
Which of the statements given above are correct?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 191

When a hydraulic turbine is operated, it is found that it has a high design efficiency and this efficiency remains constant over a wide range of regulation from the design condition. Whatis the type ofthis turbine?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 192

A 40 mm diameter 2 m long straight uniform pipe carries a steady flow of water (viscosity 1.02 centipoise) at the rate of 3.0 L/min. What is the approximate value of the shear stress on the internal wall of the pipe?

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 193

Steady flow occurs when

SSC JE Mechanical Engineering 25th Jan 2018 Shift-2 - Question 198

In mixed flow centrifugal pump

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