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ESE Prelims 2022 Achievers Quiz 25

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Question 1

A reversible engine operates between temperatures 900 k and T2(T2 < 900K) and another reversible engine between T2 and 400 K (T2>400 K) in series. The value of T2 if work outputs of both the engines are equal is

Question 2

As per the Kennedy’s theorem, the instantaneous centres of three links having relative motion lies on a __________.

Question 3

The number of radiation shield screens in case of radiation heat transfer to reduce the radiation heat exchange by 80% is __________.

Question 4

The deformation of a bar under its own weight as compared to that when subjected to a direct axial load equal to its own weight will be

Question 5

Which one of the following is a high energy rate forming process?

Question 6

Water-tube boilers are preferred for

Question 7

Consider the following:
[1]. Crystal structure
[2]. Relative size
[3]. Chemical affinity
[4]. Valency
Which of these factors govern relative solubility of two metals in each other in the solid state?

Question 8

A spring having 30 coils and stiffness K is cut into 3 equal parts and arranged them in parallel combination. What will be the effective stiffness of the new system?

Question 9

In case of free vibration with viscous damping, the damping force is proportional to

Question 10

A refrigeration plant uses a condenser with heat rejection ratio of 1.2. If the capacity of the plant is 210 kJ/min, then the value of the COP of the refrigeration plant is
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