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131.

The firing order of eight-cylinder engine is:

A.	1 ? 5 ? 4 ? 2 ? 6 ? 3 ? 7 ? 8	B.	1?2?6?3?4?7?5?8
C.	1?5?3?4?2?7?8	D.	1?2?4?6?7?3?5?8

132.

The useful life of stationary engine is:

A.	10 years	B.	15 years
C.	12 years	D.	20 years

133.

The expected life of stationary engine is:

A.	10,000 hrs	B.	12,000 hrs
C.	15,000 hrs	D.	20,000 hrs

134.

The flywheel is mounted on:

A.	Front end of crankshaft	B.	Rear end of crankshaft
C.	Front end of camshaft	D.	Rear end of camshaft

135.

Push rod is operated between:

A.	Tappet and rocker arm	B.	Camshaft and tappet
C.	Tappet and rocker arm	D.	Valve and piston

136.

Constant speed engine is used in:

A.	Tractor	B.	Power tiller
C.	Motor car	D.	Electric generator

137.

Variable-speed engines are used in:

A.	Tractor	B.	Four wheel vehicles
C.	Two wheel vehicles	D.	All are correct

138.

Constant speed governor is used in:

A.	Petrol engine	B.	Stationary engine
C.	Tractor engine	D.	All are correct

139.

If stroke: bore ratio of an engine increase, the thermal efficiency:

A.	Increase	B.	Decrease
C.	Remains same	D.	None of these

140.

Black smoke indicates:

A.	Burning of libricant in the cylinder	B.	Presence of water in fuel
C.	Engine is overloaded	D.	None of these