Q. In an impulse turbine, the pressure of water both at entering and leaving the vanes, is atmospheric.

View solution

Q. Which of the following pump is successfully used for lifting water from deep wells?

View solution

Q. The Thomson's turbine is __________ reaction turbine.

View solution

Q. In an outward flow reaction turbine

View solution

Q. A hydraulic press is a device used

View solution

Q. The flow ratio in case of Francis turbine varies from

View solution

Q. Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

View solution

Q. The number of buckets on the periphery of a Pelton wheel is given by

View solution

Q. The undershot water wheels are those in which

View solution

Q. A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used ?

View solution

Q. Which of the following pump is suitable for small discharge and high heads?

View solution

Q. The gross or total head of the turbine is the __________ of the water levels at the head race and tail race.

View solution

Q. 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.

View solution

Q. The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which

View solution

Q. The runaway speed of a hydraulic turbine is the speed

View solution

Q. The cavitation in a hydraulic machine

View solution

Q. The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is

View solution

Q. If the net positive suction head (NPSH) requirement for the pump is not satisfied, then

View solution

Q. A turbine develops 10000 kW under a head of 25 metres at 135 r.p.m. Its specific speed is

View solution

Q. The power of a centrifugal pump working under constant head and discharge increases with the speed.

View solution