SSC JE Mechanical Engineering 23rd Jan 2018 Shift-2

For the following questions answer them individually

In a certain code language, '$$+$$' represents '$$-$$', '$$-$$' represents '$$\times$$', '$$\times$$' represents '$$\div$$' and '$$\div$$' represents '$$+$$'. Find out the answer to the following question.
$$90 \times 10 \div 25 - 5 + 50 = ?$$

A ship starts from the port and sails 43 miles East, then it turns South and sails 17 miles, then it turns West and sails 25 miles, then it turns to its right and sails 17 miles. Where is it with respect to the port from where it started?

Two planes start from the same strip. Plane P flies 15 miles West, then turns left flies 22 miles and lands. In the meanwhile plane Q flies 7 miles South, then flies 11 miles East, then turns to its right, flies 15 miles and lands. Where is plane Q with respect to plane P?

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 officers are mothers
Statement II:
Some doctors are mothers
Conclusion I:
All doctors are mothers
Conclusion II:
Some mothers are officers

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 desert is jungle
Statement II:
All sand is desert
Statement III:
No trees are jungle

Conclusion I: No trees are desert
Conclusion II:
No sand is trees
Conclusion III:
All jungle is sand

In the following figure, square represents Artists, triangle represents Military officers, circle represents Collectors, and rectangle represents Fathers. Which set of letters represents collectors who are either military officers or fathers ?

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 'H' can be represented by 21, 43 etc and 'R' can be represented by 96, 87 etc. Similarly, you have to identify the set for the word 'POEM'.

Which one of the following is not a feature of monopolistic competition?

Which of the following statements are CORRECT ?
I. Change in magnetic field produces induced current.
II. Flow of current in a conductor produces magnetic field.
III. Magnetic field related to coil can be produced by motion between conductor and coil.

Which of the following is parasitic food chain?

Which of the following statement is TRUE regarding work done per cycle?

The equation for the calculation of torque transmitting capacity in the conical clutch as per uniform wear theory is ________.

When a body is said to be in dynamic equilibrium?

The expression for the Rankine’s crippling load is given as________.

The thin walled cylindrical vessel has the wall thickness t and diameter d is subjected to the gauge pressure of p. If the diameter of the vessel is doubled, then what is the ratio of hoop stress as compared to initial value?

A power transmission shaft of diameter d rotating at the speed of N rpm. The power P is related to diameter d and N as________.

Which is the correct option for the stress experienced by the shaft when the power transmission in shaft takes place through the gears?

A beam of diameter 75 mm has a span length of 10 m is subjected to uniform distributed load of w kN/m. The maximum value of bending stress produced is 6.75 kN-m. What is the value of distributed load, if the beam is simply supported?

A Carnot engine operates between T1 and T2. If there is an increase in source temperature by t and a decrease in sink temperature by t. How is the efficiency in both cases is related?

In an Otto cycle, r is the compression ratio and $$ \gamma $$ is the adiabatic index.Which relation defines the air standard efficiency?

The mean effective pressure of Otto cycle is given by ________.

Which of the below stated are properties of a PMM-2?
(1) When net work is equal to the heat absorbed and work efficiency is 100%.
(2) Heat is exchanged from one heat reservoir only.
(3) It violates Kelvin-Planck statement.
(4) It is a hypothktical machine.

What processes does Carnot cycle consist of?

Water flows through a turbine in which due to friction there is a temperature rise from $$30^\circ C$$ to $$35^\circ C$$. If there is no heat transfer taking place during the process. What is the change in the entropy of water?

Which of the following statements is not true?

The conditions of the stable equilibrium of a floating body are

A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury?

Orifice is an opening

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