MECHANIC MOTOR VEHICLE (THEORY) SEMESTER – II MCQ JULY 2018 PART-1

MECHANIC MOTOR VEHICLE THEORY SEMESTER–II MCQ JULY 2018 PART-1

Which of the following is not true for internal combustion

engine as compare to external combustion engine?

a. It has lower ratio of weight to output

b. They are self-starting

c. Higher overall efficiency

d. Mechanical simplicity

Answer : b. They are self-starting

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Which of the following is not an internal Combustion (IC) engine?

a. Gas engine

b. Wankel engine

c. Jet engine

d. Sterling engine

Answer : d. Sterling engine

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In two stroke engine there is one power stroke in_of crankshaft rotation.

a.  90°

b. 180°

c. 270°

d. 360°

Answer : d. 360°

In four stroke engine which of the following is also known as power stroke-

a. Suction stroke

b. Compression stroke

c. Expansion stroke

d. Exhaust stroke

Answer : c. Expansion stroke

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Thermal stress in cylinder liners can be reduced by……..

a. Increasing the wall thickness of cylinder liner

b. Increasing velocity of flowing water through jacket

c. Both(a)&(b)

d. None of the above

Answer : b. Increasing velocity of flowing water through jacket

Exhaust valve diameter is_intake valve.

a. Greater than

b. Same as

c. Smaller to

d. Double to

Answer : c. Smaller to

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Piston slap results from excessive clearance berween ….

a. Piston and cylinder wall

b. Piston and piston pin

c. Piston and piston

d. Piston rings

Answer : a. Piston and cylinder wall

The connecting rod attaches the piston to. The ……

a. Cylinder head

b. Crankshaft

c. Camshaft

d. Driveshaft

Answer : b. Crankshaft

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Piston rings are made of-

a. Cast iron

b. Brass

c. Copper

d. Both (a) & (b)

Answer : a. Cast iron

On which two strokes are both valves closed?

a. Intake and exhaust

b. Intake and compression

c.   Compression and power

d.   Power and exhaust

Answer : c.   Compression and power

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