Hydraulic Machines

A. directly as the air or gas density
B. inversely as square root of density
C. inversely as density
D. as square of density
E. as square root of density

A. directly as fan speed
B. square of fan speed
C. cube of fan speed
D. square root of fan speed
E. none of the above

A. directly as the air or gas density
B. inversely as square root of density
C. inversely as density
D. as square of density
E. as square root of density

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
E. special type of pump with storage device and a pressure regulator

A. 39.2%
B. 49.2%
C. 68.8%
D. 84.8%
E. 91.6%.

A. discharge a diameter
B. head a speed2
C. head a diameter
D. Power a speed3
E. none of the above is wrong

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
E. accumulating hydraulic energy

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
E. special type of pump with storage device and a pressure regulator

A. waste valve closes suddenly
B. supply pipe is long
C. supply pipe is short
D. ram chamber is large
E. supply pipe has critical diameter

A. directly as the air or gas density
B. inversely as square root of density
C. inversely as density
D. as square of density
E. as square root of density