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A hydraulic pump converts into hydraulic energy.

A) Thermal energy B) Pneumatic energy
C) Electronic energy D) Mechanical energy
What is the use of directional control valve in hydraulic system ?

A) Open or close flow path B) Decrease the pressure
C) Control the valve D) Increase the pressure

What is the working cycle of compression ignition engine ?

A) Otto cycle B) Diesel cycle

C) Rankine cycle D) Sterling cycle

Which is the reason to decrease the volumetric efficiency of an engine ?
A) High temperature B) Low temperature

C) Excessive back pressure D) Less load

The cross-sectional area of one cylinder of an engine multiplied by its stroke is
called

A) Combustion volume B) Clearance volume

C) Engine capacity D) Swept volume

When does a fresh charge escapes from the petrol engine exhaust ?
A) During valve overlap B) During valve lead

C) During valve open D) During valve lag

A ‘square engine’ is an engine having

A) Cylinders of square cross-section

B) Bore and stroke equal

C) Combustion chambers of square section

D) Bore and stroke unequal

Which is used to determine the stroke of an engine ?

A) Cycle B) Throw

C) Dia of piston D) Length of connecting rod

The portion below the piston pin boss is called

A) Crown of the piston B) Skirt of the piston

C) Land of the piston D) Ring section of the piston

The minor diameter of a camground piston is

A) along piston pin axis B) at 45 degrees to the piston pin axis

C) at the piston land D) at 90 degrees to the piston pin axis
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