Fluid Mechanics and Hydraulic Machines (3141906) MCQs

MCQs of Centrifugal Pumps

Showing 11 to 20 out of 35 Questions
1 2 3 4
11.
Centrifugal pumps transport fluids by converting
(a) kinetic energy to hydrodynamic energy
(b) hydrodynamic energy to kinetic energy
(c) mechanical energy to kinetic energy
(d) mechanical energy to hydrodynamic energy
Answer:

Option (a)

12.
The fluid coming into the centrifugal pump is accelerated by
(a) throttle
(b) impeller
(c) nozzle
(d) governor
Answer:

Option (b)

13.
___________ pump is also called as velocity pump.
(a) Centrifugal pump
(b) Screw pump
(c) Reciprocating pump
(d) Rotary displacement
Answer:

Option (a)

14.
In a centrifugal pump casing, the flow of water leaving the impeller is
(a) radial flow
(b) free vortex motion
(c) forced vortex
(d) none of the above
Answer:

Option (b)

15.
The centrifugal pump is started with its delivery valve
(a) kept fully closed
(b) kept fully open
(c) kept irrespective of any position
(d) kept 50% open
Answer:

Option (a)

16.
In a centrifugal pump, the liquid enters the pump
(a) at the top
(b) at the bottom
(c) at the centre
(d) from sides
Answer:

Option (c)

17.
The action of a centrifugal pump is as that of a
(a) reaction turbine
(b) impulse turbine
(c) reversed reaction turbine
(d) hydraulic ram
Answer:

Option (c)

18.
The casing of a centrifugal pump is designed so as to minimize
(a) friction loss
(b) cavitation
(c) loss of kinetic energy
(d) starting time
Answer:

Option (c)

19.
When a centrifugal pump is started, there will be no flow of water until the pressure rise in the impeller is large enough to overcome the
(a) static head
(b) manometric head
(c) friction head
(d) all of the above
Answer:

Option (b)

20.
In general, the vanes of a centrifugal pump are
(a) forward-curved
(b) backward-curved
(c) radial
(d) twisted
Answer:

Option (b)

Showing 11 to 20 out of 35 Questions
1 2 3 4