Top 150+ Solved Pumps MCQ Questions Answer
Q. What is purpose of vent valve in a pump?
a. High pressure control
b. High temperature control
c. Froths are generated can be minimized
d. To prevent siphon action View Answer
Q. In hydraulic head, NPSH is used for the analysis of
a. Adiabatic expansion
b. Priming
c. Wear
d. Cavitation View Answer
Q. NPSH is the difference between
a. Suction pressure and vapour pressure
b. Vapour pressure and suction pressure
c. Suction pressure and heat
d. Shaft and head View Answer
Q. What can NPSH be used to determine
a. Friction characteristics
b. Pipe diameter
c. Cavitation
d. Thermal expansion View Answer
Q. The measure of how close the fluid is to the given point is called
a. Flashing
b. Darcy’s factor
c. Transfer temperature
d. Heizenberg’s factor View Answer
Q. NPSH is relevant
a. Outside the pumps
b. Inside the pumps
c. Away from the pumps
d. Series and parallel with the pumps View Answer
Q. With the increase in cavitation, the drag coefficient of the impeller
a. Increases
b. Decreases
c. Same
d. Independent View Answer
Q. What is positive suction head?
a. Draft tube is above
b. Pump pressure is above
c. Liquid level is above
d. Turbine head is above View Answer
Q. NPSHr is determined by using
a. Pump pressure
b. PumpLinx
c. Heat transfer
d. Chemical energy View Answer
Q. If we use two lower capacity pumps in parallel, cavitation
a. Increases
b. Decreases
c. Same
d. Independent View Answer
Q. The characteristic curves of a centrifugal pump, plots required by the pump.
a. Velocity
b. Pressure
c. NPSH
d. Velocity and pressure View Answer
Q. Which among the following is not a characteristic curve for centrifugal pump?
a. Transfer speed vs Transfer pressure
b. Head vs Flow rate
c. Power input vs pump efficiency
d. Specific speed vs pump efficiency View Answer
Q. The consequence of Newtons second law is
a. Conservation of angular momentum
b. Conservation of mass
c. Conservation of potential energy
d. Conservation of kinetic energy View Answer
Q. Which of the following is taken into account during a characteristic curve?
a. Flow rate
b. Cavitation
c. Tolerances
d. Casing View Answer
Q. As the specific speed increases, the slope of HQ curve
a. Decreases
b. Increases
c. Independent
d. Remains the same View Answer