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

Q. The turbine does not have to be at the lowest point of water flow as long as the water in the draft tube is full.

a. True

b. False

c. none

d. none

Q. The outlet of the Kaplan turbine is through

a. Vane Blades

b. Moving pipeline

c. Draft tube

d. Pump

Q. Kaplan turbine is most commonly used in propeller turbines.

a. True

b. False

c. none

d. none

Q. For a Kaplan turbine, the whirl velocity at inlet of the turbine is given to be 18 m/s. The blade velocity is given as 25 m/s. What is the hydraulic efficiency for a head of 50 m. Take g = 10 m/s2?

a. 80%

b. 90%

c. 70%

d. 98%

Q. Which of the following efficiencies for Kaplan Turbine is described as the ratio between the power produced by runner to the power supplied by water at the inlet?

a. Hydraulic efficiency

b. Volumetric efficiency

c. Mechanical efficiency

d. Overall efficiency

Q. The desired hydraulic efficiency of a Kaplan turbine is 98% at a whirl velocity of 20 m/s and a head of 60 m. What should be the blade velocity of the turbine at inlet in m/s? Take g = 10 m/s2.

a. 40

b. 60

c. 80

d. 30

Q. It is given that the input water power of the Kaplan turbine is 1.10 times the runner power. What would be the hydraulic efficiency of the turbine (in %)?

a. 60.61

b. 70.71

c. 80.81

d. 90.91

Q. Which of the following efficiencies for Kaplan Turbine is described as the ratio between total quantity of water over runner blades to total quantity of water supplied to turbine?

a. Hydraulic efficiency

b. Volumetric efficiency

c. Mechanical efficiency

d. Overall efficiency

Q. The volume flow rate into a Kaplan turbine is Q m3/s. 0.10Q m3/s volume of water do not flow over the runner blades. What further information is required to find the volumetric efficiency (numerical value) of the Kaplan turbine?

a. The numerical value of Q

b. The available head of the turbine

c. The RPM or the blade velocity of the turbine

d. No further information is required

Q. A student reports the volumetric efficiency of a Kaplan turbine to be 95%. If he measures the volume flow rate through the turbine is 40 m3/s. What is the flow rate of water over the runner blades (in m3/s)?

a. 38

b. 40

c. 42.11

d. 45

Q. 95*40 = 38 m3/s.358. In a Kaplan turbine experiment, the volumetric efficiency of a given turbine is 91%. If volume flow rate of water in given to be 35 m3/s, find the volume of water (m3) NOT flowing over the runner blades per second?

a. 4.05

b. 3.15

c. 3.30

d. 2.55

Q. Which of the following efficiencies for Kaplan Turbine is defined as the ratio between the power available at the shaft of the turbine to the power produced by the runner?

a. Hydraulic efficiency

b. Volumetric efficiency

c. Mechanical efficiency

d. Overall efficiency

Q. The power available at the shaft of a Kaplan turbine is 0.75 MW. The volume flow rate of water in 15 m3/s, whirl velocity at inlet is 12 m/s and blade velocity is 5 m/s. Find the mechanical efficiency (in %)?

a. 66.66

b. 75.00

c. 83.33

d. 91.33

Q. The whirl velocity at inlet of a Kaplan turbine is 7.5 m/s and blade velocity is 5 m/s. The volume flow rate of water in 20 m3/s. Find the power output available at the shaft if the mechanical efficiency is 93% (in MW)?

a. 0.831

b. 0.697

c. 1.362

d. 0.298

Q. In a Kaplan Turbine experimental setup, the power output of the shaft is 4.325 MW. The volume flow rate of water in 15 m3/s at an available head of 50 m. Find the overallefficiency of the turbine in % (g = 10 m/s2)?

a. 57.66

b. 83.63

c. 81.33

d. 79.95

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

From 481 to 495 of 1033

Q. The turbine does not have to be at the lowest point of water flow as long as the water in the draft tube is full.

Q. The outlet of the Kaplan turbine is through

Q. Kaplan turbine is most commonly used in propeller turbines.

Q. For a Kaplan turbine, the whirl velocity at inlet of the turbine is given to be 18 m/s. The blade velocity is given as 25 m/s. What is the hydraulic efficiency for a head of 50 m. Take g = 10 m/s2?

Q. Which of the following efficiencies for Kaplan Turbine is described as the ratio between the power produced by runner to the power supplied by water at the inlet?

Q. The desired hydraulic efficiency of a Kaplan turbine is 98% at a whirl velocity of 20 m/s and a head of 60 m. What should be the blade velocity of the turbine at inlet in m/s? Take g = 10 m/s2.

Q. It is given that the input water power of the Kaplan turbine is 1.10 times the runner power. What would be the hydraulic efficiency of the turbine (in %)?

Q. Which of the following efficiencies for Kaplan Turbine is described as the ratio between total quantity of water over runner blades to total quantity of water supplied to turbine?

Q. The volume flow rate into a Kaplan turbine is Q m3/s. 0.10Q m3/s volume of water do not flow over the runner blades. What further information is required to find the volumetric efficiency (numerical value) of the Kaplan turbine?

Q. A student reports the volumetric efficiency of a Kaplan turbine to be 95%. If he measures the volume flow rate through the turbine is 40 m3/s. What is the flow rate of water over the runner blades (in m3/s)?

Q. 95*40 = 38 m3/s.358. In a Kaplan turbine experiment, the volumetric efficiency of a given turbine is 91%. If volume flow rate of water in given to be 35 m3/s, find the volume of water (m3) NOT flowing over the runner blades per second?

Q. Which of the following efficiencies for Kaplan Turbine is defined as the ratio between the power available at the shaft of the turbine to the power produced by the runner?

Q. The power available at the shaft of a Kaplan turbine is 0.75 MW. The volume flow rate of water in 15 m3/s, whirl velocity at inlet is 12 m/s and blade velocity is 5 m/s. Find the mechanical efficiency (in %)?

Q. The whirl velocity at inlet of a Kaplan turbine is 7.5 m/s and blade velocity is 5 m/s. The volume flow rate of water in 20 m3/s. Find the power output available at the shaft if the mechanical efficiency is 93% (in MW)?

Q. In a Kaplan Turbine experimental setup, the power output of the shaft is 4.325 MW. The volume flow rate of water in 15 m3/s at an available head of 50 m. Find the overallefficiency of the turbine in % (g = 10 m/s2)?

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