Top 1000+ Solved Fluid Mechanics (FM) MCQ Questions Answer

From 31 to 45 of 1033

Q. The rotational kinetic energy comes from             

a. Engine motor

b. Pump

c. Tank

d. Draft tube View Answer

  • a. Engine motor

Q. Gear pumps are                      

a. Tangential flow pumps

b. Positive displacement pumps

c. Negative displacement pumps

d. Radial pumps View Answer

  • a. Tangential flow pumps

Q. The fluid gains while passing through the impeller.

a. Velocity

b. Pressure

c. Temperature

d. Velocity and pressure View Answer

  • d. Velocity and pressure View Answer

Q. What is the shape of the diffuser in the centrifugal pump?

a. Round

b. Dough nut

c. Rectangle

d. Cylindrical View Answer

  • b. Dough nut

Q. When the casing in a centrifugal pump decelerates the flow, what increases?

a. Pressure

b. Temperature

c. Volume

d. Flow rate View Answer

  • a. Pressure

Q. The velocity imparted by the impeller is converted into                  

a. Pressure energy

b. Kinetic energy

c. Momentum

d. Potential energy View Answer

  • a. Pressure energy

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

  • a. Conservation of angular momentum

Q. What is a major advantage of centrifugal pump?

a. Cost

b. Simple in construction

c. Efficiency

d. Pump parameters View Answer

  • b. Simple in construction

Q. ‘Ht’ means  

a. Tangential head

b. Horizontally head

c. Theory head pressure

d. Radially head pressure View Answer

  • c. Theory head pressure

Q. Different velocities in a centrifugal pump are determined by using                

a. Velocity triangle

b. Reynolds number

c. Froude number

d. Overall efficiency View Answer

  • a. Velocity triangle

Q. With the increase in the input power, efficiency               

a. Increases

b. Decreases

c. Same

d. Independent View Answer

  • b. Decreases

Q. What does PSP stand for?

a. Pump start procedure

b. Positive start pump

c. Pump start pointer

d. Positive start pointer View Answer

  • a. Pump start procedure

Q. With the increase in the flow rate, efficiency             

a. Decreases

b. Increases

c. Remains same

d. Independent View Answer

  • b. Increases

Q. Pump efficiency is defined as the ratio of                      

a. Pressure to temperature

b. Temperature to pressure

c. Water horsepower to pump horsepower

d. Pump horse power to water horse power View Answer

  • c. Water horsepower to pump horsepower

Q. The difference in the total head of the pump is called               

a. Manometric head

b. Euler head

c. Pressure head

d. Shaft head View Answer

  • a. Manometric head
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