Q. A Pelton wheel develops 1750 kW under a head of 100 metres while running at 200 r.p.m. and discharging 2500 litres of water per second. The unit speed of the wheel is

View solution

Q. The hydraulic efficiency of an impulse turbine is maximum when velocity of wheel is __________ of the jet velocity,

View solution

Q. The specific speed of a hydraulic turbine depends upon

View solution

Q. Dynamic similarity is said to exist between the model and the prototype, if both of them

View solution

Q. The specific speed of a turbine is given by the equation

View solution

Q. A draft tube is used with impulse turbines.

View solution

Q. A hydraulic ram is a device used to

View solution

Q. Overall efficiency of a centrifugal pump is the ratio of

View solution

Q. The function of guide vanes in a reaction turbine is to

View solution

Q. Which of the following statement is correct ?

View solution

Q. If the ratio of corresponding velocities at corresponding points are equal, then the model and the prototype are said to have dynamic similarity.

View solution

Q. The jet ratio is defined as the ratio of the

View solution

Q. Mechanical efficiency of a centrifugal pump is the ratio of

View solution

Q. A reciprocating pump is also called a __________ displacement pump.

View solution

Q. The head available at the inlet of the turbine is known as net or effective head.

View solution

Q. In an axial flow reaction turbine, the water flows __________ to the axis of the wheel.

View solution

Q. The air vessel, in a reciprocating pump, is a cast iron closed chamber having an opening at its base.

View solution

Q. A double overhung Pelton wheel has

View solution

Q. Manometric head is the actual head of water against which a centrifugal pump has to work.

View solution

Q. The hydraulic efficiency of an impulse turbine is the

View solution