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141.

The violent noise head in engine during process of combustion is:

A.	Scavenging	B.	Detonation
C.	Wearing	D.	All are correct

142.

The process of removal of burnt gases from the engine cylinder is:

A.	Scavenging	B.	Detonation
C.	Knocking	D.	Burning

143.

The indicated horsepower of an engine was measured by:

A.	Dynamometer	B.	Tachometer
C.	Indicator	D.	None of these

144.

The location of carburetor in tractor from front is in:

A.	Center	B.	Left side
C.	Right side	D.	None of these

145.

The best hydrocarbons from detonation point of view are:

A.	Paraffin	B.	Naphthenes
C.	Aromatics	D.	Olefins

146.

The calorific value of gasoline is:

A.	45 MJ/kg	B.	45 Kj/kg
C.	45 J/kg	D.	None of these

147.

The temperature at which fuel flow ceases is:

A.	Pour point	B.	Flash point
C.	Cloud point	D.	Smoke point

148.

The temperature at which fuel catches fire is:

A.	Pour point	B.	Flash point
C.	Cloud point	D.	Smoke point

149.

The lowest temperature at which fuel begins to crystallize is:

A.	Pour point	B.	Flash point
C.	Cloud point	D.	Smoke point

150.

The temperature at which fuel begins to vaporize is:

A.	Pour point	B.	Flash point
C.	Cloud point	D.	Smoke point