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 'Junior Instructor Mechanical Agricultural Machinery' And exam conducted in the year 2021. And Question paper code was '063/2021'. 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.
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23. Diesel engine burns fuel of volatility.
A) Low B) Constant C) Same D) High
24. Which process is called scavenging ?
A) Burnt gases escape into the atmosphere
B) The mixture is ignited by electric spark
மட
) TI
) Air fuel mixture drawn in the crank case
) TI
he mixture flows down and pushes the burnt gas out
25. Which of the engine has maximum fuel efficiency ?
A) Inline engine B) Radial engine
C) Opposed engine 0) “ഗ് engine
26. The compression ratio is expressed in
Vs + \/0 ۷
A) CR= B) CR=
) 0 Ve ) Vs—Ve
6 45-4௦
©) 8-൦ ഉ) CR=
۷+۷۶۳ ۷
27. The heating of gas at constant is governed by Boyle’s law.
A) Pressure B) Volume C) Heat D) Temperature
28. In cylinder block piston liners are sealed with the water jacket by
A) Oil ring B) Oring
C) Oil seal D) Gasket
29. Valve clearance is adjusted when both the valves are in
A) Inlet valve is only in open position
B) Exhaust valve is only in open position
C) Close position
D) Open position