Top 350+ Solved Turbine MCQ Questions Answer
Q. The available head of a Francis Turbine is 100 m. Velocity of the flow at the runner inlet is 15 m/s. Find the flow ratio.
a. 0.33
b. 0.45
c. 0.67
d. 0.89
Q. What is the typical value for flow ratio in a Francis turbine?
a. 0.05 – 0.1
b. 0.15 – 0.30
c. 0.35 – 0.45
d. 0.50 – 0.60
Q. The available head of a Francis Turbine is 120 m. The blade velocity is given 35 m/s. Find the speed ratio of the turbine.
a. 0.56
b. 0.61
c. 0.71
d. 0.81
Q. The typical value range of speed ratio for a Francis turbine is:
a. 0.3 – 0.6
b. 0.5 – 0.6
c. 0.1 – 0.4
d. 0.6 – 0.9
Q. Which of the following efficiencies for Francis Turbine is described as the ratio betweenthe 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. Which of the following efficiencies for Francis 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. Which of the following efficiencies for Francis 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. Which of the following efficiencies for Francis Turbine is defined as the ratio between the power available at the shaft to the power supplied by water at the inlet?
a. Hydraulic efficiency
b. Volumetric efficiency
c. Mechanical efficiency
d. Overall efficiency
Q. The volume flow rate into a Francis turbine is Q m3/s. 0.25Q m3/s volume of water do not flow over the runner blades. What is the mechanical efficiency of the turbine (in %)?
a. 65
b. 75
c. 80
d. Mechanical efficiency cannot be found out from the given information