Top 350+ Solved Turbine MCQ Questions Answer

From 121 to 135 of 406

Q. The draft tube is an                

a. Interior tube

b. Exterior tube

c. Tank depth alternator

d. Nozzle tube

  • b. Exterior tube

Q. What type of pressure does the draft tube depend upon?

a. Gauge pressure

b. Atm pressure

c. Normal pressure

d. Normal and Atm pressure

  • a. Gauge pressure

Q. Draft tube allows turbine to be placed below the tail race.

a. True

b. False

c. none

d. none

  • b. False

Q. Specific speeds are used in pumps to determine                

a. Temperature

b. Reaction speed

c. Suction specific speed

d. Wheel speed

  • c. Suction specific speed

Q. The tube at the exit of the nozzle increases the               

a. Temperature

b. Pressure

c. Volume of the flow

d. Density of flow

  • b. Pressure

Q. Specific speed is used to characterize               

a. Turbomachinery speed

b. Flow speed

c. Energy flow

d. Heat generated

  • a. Turbomachinery speed

Q. Specific speed predicts the shape of a/an                  

a. Pump

b. Density head

c. Impeller

d. Motor

  • c. Impeller

Q. What helps in categorizing the impellers?

a. Quasi static number

b. Rotor

c. Height of draft tube

d. Pump

  • a. Quasi static number

Q. Imperial units is defined as                  

a. Temperature by pressure

b. Tail race and head race

c. Revolutions per minute

d. Turbine performance

  • c. Revolutions per minute

Q. Ratio of pump or turbine with reference pump or turbine is called as                  

a. Efficiency

b. Performance

c. Heat generated

d. Relative velocity

  • b. Performance

Q. Low specific speed in hydraulic head is developed due to                  

a. Mass flow rate

b. Increase in temperature

c. Centrifugal force

d. Increase in pressure

  • c. Centrifugal force

Q. Centrifugal pump impellers have speed ranging from                

a. 500- 10000

b. 50- 100

c. 200-300

d. 0-50

  • a. 500- 10000

Q. What is the unit of specific speed in metric system?

a. m.s

b. m/s

c. m3/s

d. m

  • c. m3/s
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