61.
The horse power required in above case will be
A
1.5 B.H.P.
B
same
C
0.75 B.H.P.
D
B.H.P./0.75
Loading practice questions
70 practice sets · Page 4 of 4
The horse power required in above case will be
1.5 B.H.P.
same
0.75 B.H.P.
B.H.P./0.75
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge
1.5 Q
same quantity of liquid
0.75 Q
Q/0.75
Air vessels in reciprocating pump are used to
save pump from cavitation
smoothen flow
reduce acceleration to minimum
increase pump efficiency
Motion of a liquid in a volute casing of a centrifugal pump is an example of
forced cylindrical vortex flow
spiral vortex flow.
radial
forced spiral vortex flow
In centrifugal pumps, maximum efficiency is obtained when the blades are
radial
straight
bent forward
bent backward
The efficiency of a centrifugal pump is maximum when its blades are
bent forward first and then backward
straight
bent forward
bent backward
In reaction turbine, draft tube is used
to increase flow rate
to transport water downstream without eddies
to convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section
for safety of turbine
A hydraulic intensifier normally consists of
a cylinder, a piston, storage tank and control valve
two cylinders, two rams and a storage device
a cylinder and a ram
two co-axial rams and two cylinders
A hydraulic accumulator normally consists of
a cylinder, a piston, storage tank and control valve
two cylinders, two rams and a storage device
a cylinder and a ram
two co-axial rams and two cylinders
Maximum impulse will be developed in hydraulic ram when
ram chamber is large
waste valve closes suddenly
supply pipe is long
supply pipe is short