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Fluid Mechanics | Hydraulic Turbines-1
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Question 1
In a Kaplan turbine, the power developed is 20000 kW under a head of 30 m. The flow ratio is 0.6 and boss diameter is 0.5 times runner diameter. The overall efficiency of the turbine is 80%. The discharge through the turbine is:
Take g=10 m/s2
Question 2
The function of a draft tube in reaction turbine is to:
Question 3
Cavitation parameter is defined by
Question 4
A jet of water with area 20 
and velocity of 20 m/s strikes centre of a hemispherical vane. The vane moves at a velocity of 10 m/s in the direction of jet. The force exerted on the vane is:
and velocity of 20 m/s strikes centre of a hemispherical vane. The vane moves at a velocity of 10 m/s in the direction of jet. The force exerted on the vane is:
Question 5
Which one of the following is impulse turbine?
Question 6
Degree of Reaction of Pelton turbine is __________.
Question 7
An adjustable blade turbine is called _______.
Question 8
Which one of the following is an example of the 50% reaction machine?
Question 9
A reaction turbine (hydraulic) discharge 34m3/s of water under a head of 8 m and with an overall efficiency of 91%. The power developed in MW is:
Question 10
A hydraulic turbine develops 1000kW power for a head of 40m. If the head is reduced to 20m, the power developed (in kW) is ______.
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