A Pelton wheel developskW under a head ofmetres while running atr.p.m. and discharginglitres of water per second. The unit discharge of wheel is
In order to avoid cavitation in centrifugal pumps
Which of the following statement is wrong ?
A double overhung Pelton wheel has
Which of the following pump is suitable for small discharge and high heads?
In a centrifugal pump, the regulating valve is provided on the
The Thomson's turbine is __________ reaction turbine.
The flow ratio in case of Francis turbine varies from
Delivery head of a centrifugal pump is
A hydraulic intensifier is a device used to increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure.
Which of the following statement is correct as regard to water wheels?
The gross or total head of the turbine is the __________ of the water levels at the head race and tail race.
A Francis turbine is an outward flow reaction turbine.
Which of the following turbine is preferred for a specific speed oftor.p.m.?
In a reaction turbine, the water enters the wheel under pressure and flows over the vanes.
Head developed by a centrifugal pump is
The specific speed of a centrifugal pump may be defined as the speed of an imaginary pump, identical with the given pump, which will discharge one litre of water, while it is being raised through a head of one metre.
If the ratio of all the corresponding linear dimensions are equal, then the model and the prototype are said to have
The ratio of the normal force of jet of water on a plate inclined at an angle ofas compared to that when the plate is normal to jet, is
In a centrifugal pump, the water enters the impeller __________ and leaves the vanes axially.
The depth of the bucket for a Pelton wheel is generally __________ the diameter of jet.
A jet of water enters and leaves a fixed curved vane tangentially. The force of the jet along normal to the vane is (where α and β = Inlet and outlet angles of the jet respectively)
The number of buckets on the periphery of a Pelton wheel is given by
A Kaplan turbine is an axial flow reaction turbine.
An impulse turbine is used for
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is
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