IC engine MCQ question previous year asked in ssc je, rrb je, ese etc

IC engine mcq questions for all competitive exam like ssc je, rrb je, psu, ESE, AE etc. All questions are asked in previous years.

  1. Polymerisation is a chemical process in which molecules of a compound become

(a) larger
(b) slowed down
(c) smaller
(d) liquid
(e) gaseous.

Ans. – (a) larger

  1. The term scavenging is generally associated with (a) 2-stroke cycle engines (b) 4-stroke cycle engines (c) aeroplane engines
    (d) diesel engines
    (e) high efficiency engines.

Ans. – (e) high efficiency engines.

  1. In diesel engine, the compression ratio in comparison to expansion ratio is

(a) same
(b) less
(c) more✔️
(d) variable

4 The cam shaft of a four stroke I.C. engine running
at 1500 rmp will run at

(a) 1500 rpm
(b) 700 rpm✔️
(c) 3000 rpm
(d) any value independent of engine speed
(e) none of the above.

  1. Engine pistons are usually made of aluminium alloy because it

(a) is lighter ✔️
(b) wears less
(c) absorbs shocks
(d) is stronger
(e) does not react with fuel and lub oil.

  1. Most high speed compression engines operate on

(a) Otto cycle
(b) Diesel cycle
(c)Dual cycle✔️
(d) Carnot cycle
(e) Two stroke cycle.

  1. The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is

(a) same
(b) more✔️
(c) less
(d) less or more depending on operating conditions
(e) unpredictable.

  1. A diesel engine as compared to petrol engine (both running arrated load) is

(a) more efficient✔️
(b) less efficient
(c) equally efficient
(d) unpredictable
(e) other factors will decide it.

  1. The size of inlet valve of an engine in comparison exhaust valve is to

(a) more
(b) less✔️
(c) same
(d) more/less depending on capacity of engine
(e) varies from design to design.

Also Check

Thermodynamics mcq questions

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