Kerala PSC Previous Years Question Paper & Answer

Title : LECTURER IN MECHANICAL ENGINEERING
Question Code : A

Page:6


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'LECTURER IN MECHANICAL ENGINEERING' And exam conducted in the year 2017. And Question paper code was '069/2017/OLE'. 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.

page: 6 out of 11
Excerpt of Question Code: 069/2017/OLE

C:-21
D:-25
Correct Answer:- Option-C

Question46:-If 'P' is the Ratio of inside to outside diameter of a shaft, the ratio of torque carrying capacity of solid shaft to
that of hollow shaft is given by
(1-874) ೧(-1)`
1-4۰
7೧47
:- (1)॥(774)
Correct Answer:- Option-A
Question47:-Angle of helix in a closed coiled spring is
A:-<100
B:->100
0 00
D:-None
Correct Answer:- Option-A
Question48:-For the same maximum pressure and temperature of Otto, Diesel and dual combustion air standard cycles
A:-The compression ratio will be same
B:-Heat supplied to the cycles will be same
C:-Air standard efficiency will have same value
D:-Heat rejected by the engine will be same
Correct Answer:- Option-D
Question49:-The mass of carbon per kg of flue gas is given by
4:- ` 3760 (2) +(11)/(3)` (0
(7)/(3)0 (2) +3//11 0
321002) + 7/3 CO
ഉ:- (11)/(3)60. (2) + 3/7` 0
Correct Answer:- Option-D
Question50:-Critical thickness of insulation for sphere is given by
[k *->* thermal conductivity, h ‘->* heat transfer coefficient]
‏۰۸ھ‎
‎8:- (69/48)
൩/൮
0:- 2௮/0
Correct Answer:- Option-D
Question51:-In a certain Heat exchanger, both fluids have identical mass flow rate -sp. heat product. The hotfluid enters at
76°C and leaves at 47°C and cold fluid enters at 26°C and leaves at 55°C. The effectiveness of heat exchanger is
A:-0.16
B:-0.58
C:-0.72
D:-1.0
Correct Answer:- Option-B
Question52:-When ammonia is used as Refrigerant, the recommended material used for Refrigerant lines are
A:-Copper
B:-Aluminium
C:-Steel
D:-Brass
Correct Answer:- Option-C
Question53:-A Spark plug gap should be
A:-0.2 to 0.8 mm
B:-0.3 to 0.7 mm
C:-0.4 to 0.9 mm
D:-0.6 to 1.0 mm
Correct Answer:-Question Cancelled
Question54:-Which type of compressor mostly used in supercharger of internal combustion engines ?
A:-Roots blower
B:-Axial flow compressor
C:-Redial flow compressor
D:-Reciprocating compressor
Correct Answer:- Option-C

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LECTURER IN MECHANICAL ENGINEERING : Video