Page:6
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Deputy Engineer (Mechanical), Inspector of Factories and Boilers Gr II, Assistant Engineer (Mechanical)' And exam conducted in the year 2023. And Question paper code was '050/2023'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
050/23
24.
25.
26.
27.
28.
29.
30.
31.
The Euler’s theory of columns is valid when the
i. Slenderness ratio is greater than or equal to f= E
6५
ii. Crushing stress is > buckling stress
iii. The column is short
iv. Crushing stress is < buckling stress
A) iand ii B) iand iv C) i, ii and iii D) iii and iv
Change in enthalpy in a closed system is equal to heat transferred, if the reversible
process takes place at constant
A) temperature B) internalenergy C) entropy D) pressure
An engine operates between temperatures limits of 900 K and T, and another engine
operates between T. and 400 K. For both engines to be equally efficient, T, should
be equal to
A) 650K B) 600K C) 625K 0) 700 >
The throttling of certain gases may be used for getting the refrigerating effect. The
value of Joule coefficient (11) for such a process is
^) ॥= 0 2) ॥ =1 ©) ॥>1 0) ॥<0
The thermodynamic property which is evaluated with the help of Maxwells equations
from the data of other measurable properties of a system is
A) entropy B) enthalpy C) specific heat D) latent heat
Which one of the following gases will have the maximum value of characteristic gas
constant ?
A) oxygen B) nitrogen C) carbon dioxide D) sulfur dioxide
For a heat engine operating on Carnot cycle, the work output is 25% of the heat
rejected to the sink. The thermal efficiency for the engine would be
A) 10% B) 50% C) 30% D) 20%
In Carnot cycle, the addition of heat takes at
A) constant pressure
B)
C) constant temperature
D) partly at constant pressure and partly at constant volume
constant volume