Question: The air vessel, in a reciprocating pump, is a cast iron closed chamber having an opening at its base.
[A].Agree
Disagree
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
Mechanical Engineering
In a mixed flow centrifugal pump, the flow through the impeller is a combination of radial and axial flows.
Question: In a mixed flow centrifugal pump, the flow through the impeller is a combination of radial and axial flows.
[A].Correct
Incorrect
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
Head developed by a centrifugal pump is
Question: Head developed by a centrifugal pump is
[A].proportional to diameter of impeller
proportional to speed of impeller
proportional to diameter and speed of impeller
none of the above
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A reciprocating pump is also called a __________ displacement pump.
Question: A reciprocating pump is also called a __________ displacement pump.
[A].positive
negative
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
A reciprocating pump is suitable for less discharge and higher heads.
Question: A reciprocating pump is suitable for less discharge and higher heads.
[A].True
False
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the
Question: A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the
[A].kinetic head
velocity head
manometric head
static head
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Multi-stage centrifugal pumps are used to
Question: Multi-stage centrifugal pumps are used to
[A].give high discharge
produce high heads
pump viscous fluids
all of these
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)
Question: Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)
[A].Q = π.D.Vf
Q = π.b.Vf
Q = π.D.b.Vf
Q = D.b.Vf
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Overall efficiency of a centrifugal pump is the ratio of
Question: Overall efficiency of a centrifugal pump is the ratio of
[A].energy available at the impeller to the energy supplied to the pump by the prime mover
actual workdone by the pump to the energy supplied to the pump by the prime mover
energy supplied to the pump to the energy available at the impeller
manometric head to the energy supplied by the impeller per kN of water
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Mechanical efficiency of a centrifugal pump is the ratio of
Question: Mechanical efficiency of a centrifugal pump is the ratio of
[A].energy available at the impeller to the energy supplied to the pump by the prime mover
actual workdone by the pump to the energy supplied to the pump by the prime mover
energy supplied to the pump to the energy available at the impeller
manometric head to the energy supplied by the impeller per kN of water
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.