Pressure intensifier increases the pressure in proportion to____________________?

A. Ratio of diameters
B. Square of ratio of diameters
C. Inverse ratio of diameters
D. Square of inverse ratio of diameters

According to fan laws, at constant pressure, the speed capacity and power vary_________________?

A. Directly as the air or gas density
B. Inversely as square root of density
C. Inversely as density
D. As square of density

According to fan laws, for the fans having constant wheel diameters, the power demand varies_______________?

A. Directly as fan speed
B. Square of fan speed
C. Cube of fan speed
D. Square root of fan speed

According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary________________?

A. Directly as the air or gas density
B. Inversely as square root of density
C. Inversely as density
D. As square of density

A hydraulic accumulator normally consists of________________?

A. Two cylinders, two rams and a storage device
B. A cylinder and a ram
C. Two co-axial rams and two cylinders
D. A cylinder, a piston, storage tank and control valve

Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of_______________?

A. 39.2%
B. 49.2%
C. 68.8%
D. 84.8%

Puck up the wrong statement about centrifugal pump_______________?

A. Discharge a diameter
B. Head a speed2
C. Head a diameter
D. Power a speed3

Hydraulic accumulator is used for____________________?

A. Accumulating oil
B. Supplying large quantities of oil for very short duration
C. Generally high pressures to operate hydraulic machines
D. Supplying energy when main supply fails

A hydraulic intensifier normally consists of __________________?

A. Two cylinders, two rams and a storage device
B. A cylinder and a ram
C. Two co-axial rams and two cylinders
D. A cylinder, a piston, storage tank and control valve

Maximum impulse will be developed in hydraulic ram when ___________________?

A. Waste valve closes suddenly
B. Supply pipe is long
C. Supply pipe is short
D. Ram chamber is large