Centrifugal Pumps MCQs : Here you will find MCQ Questions related to "Centrifugal Pumps" in Hydraulic Machines. These Centrifugal Pumps MCQ Questions Will help you to improve your Hydraulic Machines knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations
Question 1
Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the?
A. Mechnical energy
B. Atomic energy
C. Hydrodynamic energy
D. Kinetic energy
View Answer
Ans : C
Explanation: Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow.
Question 2
The rotational energy typically comes from an ?
A. turbine
B. electric motor
C. engine
D. Both B and C
View Answer
Ans : D
Explanation: The rotational energy typically comes from an engine or electric motor.
Question 3
A centrifugal fan is commonly used to implement ?
A. air handling unit
B. air cleaner
C. vaccum unit
D. All of the above
View Answer
Ans : A
Explanation: A centrifugal fan is commonly used to implement an air handling unit or vacuum cleaner.
Question 4
The curved vane was introduced by British inventor John Appold in ?
A. 1850
B. 1851
C. 1852
D. 1853
View Answer
Ans : B
Explanation: The curved vane was introduced by British inventor John Appold in 1851.
Question 5
The color triangle formed by velocity vector u,c,w called?
A. velocity unit
B. velocity vector
C. velocity triangle
D. None of the above
View Answer
Ans : C
Explanation: The color triangle formed by velocity vector u,c,w called velocity triangle.
Question 6
Vertical centrifugal pumps are also referred to as cantilever pumps
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: Vertical centrifugal pumps are also referred to as cantilever pumps. They utilize a unique shaft and bearing support configuration that allows the volute to hang in the sump while the bearings are outside the sump.
Question 7
Centrifugal pump is a_________
A. Flow regulating device
B. Drafting device
C. Intercooling device
D. Turbomachinery
View Answer
Ans : D
Explanation: Centrifugal pump is a turbomachinery. Turbomachines are machines that transfer energy between a rotor and a fluid, including both turbines and compressors. It is a mechanical device.
Question 8
The main function of nozzle is to __________
A. Varying temperatures
B. Pressure variations
C. Load variations
D. Heat variations
View Answer
Ans : B
Explanation: The main function of nozzle is to vary the pressure of fluid passing through the nozzle. It is done by opening and shutting the sets of nozzles. Thus, its main function is to regulate pressure of the fluid.
Question 9
The main function of centrifugal pumps are to ________
A. Transfer speed
B. Transfer pressure
C. Transfer temperature
D. Transfer temperature
View Answer
Ans : D
Explanation: The primary objective of a centrifugal pump is to transfer energy. Centrifugal pump is a turbomachinery. Turbomachines are machines that transfer energy between a rotor and a fluid, including both turbines and compressors. It is a mechanical device.
Question 10
Which among the following control the flow rate?
A. Pump
B. Head
C. Value
D. Tank Pipe
View Answer
Ans : C
Explanation: Flow rate of the tank is controlled by the valve. The actuation of individual valve closes. This corresponds to the set of nozzle thereby controlling the actual flow rate of the fluid passing through the valve.