Basic Mechanical Engineering (3110006) MCQs

MCQs of Internal Combustion Engines

Showing 1 to 10 out of 47 Questions
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1.
Which of the following is not an automobile ?
(a) Bike
(b) Car
(c) Aeroplane
(d) Truck
Answer:

Option (c)

2.
I.C. engine is a heat engine in which
(a) chemical energy is converted into mechanical energy
(b) combustion of fuel takes place inside the cylinder
(c) a part of the chemical released during combustion has to be released to the atmosphere
(d) all of the above
Answer:

Option (d)

3.
An engine which generates power by combustion of fuel takes place inside the cylinder is called
(a) internal combustion engine
(b) external combustion engine
(c) steam engine
(d) steam boiler
Answer:

Option (a)

4.
For earth moving machines, widely used engines are
(a) petrol engine
(b) steam engine
(c) diesel engine
(d) gas engine
Answer:

Option (c)

5.
Stroke is defined as the motion of piston from
(a) BDC to TDC
(b) TDC to BDC
(c) Both A and B
(d) BDC to TDC then TDC to BDC
Answer:

Option (c)

6.
The compression ratio is the ratio of
(a) swept volume to total volume
(b) total volume to swept volume
(c) swept volume to clearance volume
(d) total volume to clearance volume
Answer:

Option (d)

7.
The compression ratio of the I.C. engine is.......
(a) the ratio of volumes of air in cylinder before compression stroke and after the compression stroke
(b) the volume displaced by piston per stroke and clearance volume in the cylinder
(c) ratio of pressure after compression and before compression
(d) none of the above
Answer:

Option (a)

8.
Which one is a link between piston and crank?
(a) Connecting rod
(b) Piston pin
(c) Push rod
(d) Crankshaft
Answer:

Option (a)

9.
The camshaft speed of the four-stroke engine is
(a) double than crankshaft speed
(b) equal to crankshaft speed
(c) four times of crankshaft speed
(d) half of crankshaft speed
Answer:

Option (d)

10.
The function of piston rings is
(a) to connect piston and connecting road
(b) to transmit force from piston to crank
(c) to maintain a gas-tight between the piston and the cylinder
(d) to convert reciprocating motion into rotary motion
Answer:

Option (c)

Showing 1 to 10 out of 47 Questions
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