The flow rate in gear pump___________________?

A. Increases with increase in pressure
B. Decreases with increase in pressure
C. More or less remains constant with in-crease in pressure
D. Unpredictable

Reaction turbines are used for____________________?

A. low head
B. high head
C. high head and low discharge
D. high head and high discharge

The angle of taper on draft tube is A. greater than 15° B. greater than 8° C. greater than 5° D. less than 8° E. less than 3°.___________________? The angle of taper on draft tube is

A. Less than 8°
B. Greater than 15°
C. Greater than 8°
D. Greater than 5°

In axial flow fans and turbines, fluid enters and leaves as follows________________?

A. Radially, axially
B. Axially, radially
C. Axially, axially
D. Radially, radially

Air vessels in reciprocating pump are used to__________________?

A. Smoothen flow
B. Reduce acceleration to minimum
C. Increase pump efficiency
D. Save pump from cavitation

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

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

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

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

Puck up the wrong statement about centrifugal pump_______________?

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