Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'LECTURER IN MACHANICAL ENGINEERING POLYTECHNICS TECHNICAL EDUCATION' And exam conducted in the year 2014. And Question paper code was '003/2014'. 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.
54.
55.
87.
88,
59.
61,
For a perfectly black body
(A} Absorptivity ¢ =1, Reflectivity p =0 and transmissivity ¢ =0
(8) a=r=0and p=1
(0 a=p=0and r=1
(D) None ॥
The intensity of solar radiation on earth is :
(ಗ) 0.5 kW/m? {B) 1kW/m?
(3) னி (0) 81೫/೧೯
11 the temperature of a hot body is increased by 50% the amount of radiation emitted by it
would increase by nearly :
(ಯ) 60% 1) 100%
(C) 200% (D) 00%
The valué of shape factor for two infinite parallel planes separated by a distance 18 1
കര 0 छ) 1
(८) 05 (0) x
The ratio of heat transfer by convection to that by conduction is called :
(ക) Stanton Number (18) Nusselt Number
(0) Biot Number (D) Peclet Number
Which dimensionless number has a significant role in natural convection?
(ക) Grashoff Number (0) Peclet Number
(0 Mach Number (D) None
For the same operating temperature limits the COP of the heat pump equals :
(AY COP of refrigerator (B) 1+ COP of Refrigerator
(C) COP of Refrigerator —1 (D) None
A Carnot refrigerator rejects 3000 kJ of heat at 400 K while using 1000 kJ of work. The
lowest operating temperature in the cycle should be about :
(A) 288K (0) 300K
(0 267K (1) 2738
9 3೩/2014
1९.1.0.]
