MECHANIC DIESEL MULTIPLE CHOICE QUESTIONS (MCQ) 2016 JULY MECHANIC DIESEL THEORY SEMESTER - II JULY2016,

                     MECHANIC DIESEL 
MULTIPLE CHOICE QUESTIONS (MCQ) 
2016 JULY MECHANIC DIESEL THEORY                          SEMESTER - II JULY2016,

The operation of forcing additional

air under pressure in the engine

cylinder is known

as -

a) Scavenging

 b) Turbulence

c) Supercharging

d) Pre-ignition

Answer:- c) Supercharging

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A diesel engine as compared to

petrol engine (both running and

rated load) is -

a) More efficient

 b) Less efficient

c) Equally efficient

d) Other factors will decide it

Answer:- a) More efficient

A diesel engine is ........ as compared

to petrol engine, both running at rated

load.

a) Equally efficient

b) Less efficient

c) More efficient

d) None of these

Answer:- c) More efficient

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A higher compression ratio causes ............

a) Pre-ignition

b) Increase in detonation

c) Acceleration in the rate of combustion    

d) Any one of these

Answer:- d) Any one of these

The size of inlet valve of an engine in

comparison to exhaust valve is ........

a) More

b) Less

c) Same

d) More/less depending on capacity of engine

Answer:- a) More

Which is more viscous lube oil?

a) SEA 30

b) SAE 50

c) SAE 70

d) SAE 80

Answer:- d) SAE 80

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The magneto in an automobile is

basically .............

a) Transformer

b) D.C. generator

c) Capacitor

d) Magnetic circuit

Answer:- b) D.C. generator

The output of a diesel engine

can be increased without increasing

the engine revolution or size in

following way ................

a) Feeding more fuel

b) Heating incoming air

c) Scavenging

d) Supercharging

Answer:- d) Supercharging

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Diesel as compared to petrol is ......

a) Highly ignitable

b) More difficult to ignite

c) Less difficult to ignite

d) None of these

Answer:- b) More difficult to ignite

The colour of exhaust from

diesel engine is generally ............
a) White

b) Bluish

c) Black

d) Violet

Answer:- c) Black

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