Q. The discharge of a centrifugal pump working under constant head __________ with the speed.

View solution

Q. The unit discharge through the turbine is

View solution

Q. Delivery head of water of a centrifugal pump is inversely proportional to diameter of its impeller.

View solution

Q. Power required to drive a centrifugal pump is directly proportional to __________ of its impeller.

View solution

Q. The mechanical efficiency of an impulse turbine is

View solution

Q. The overshot water wheels are those in which the wheel runs entirely by the __________ of water.

View solution

Q. In a Kaplan turbine runner, the number of blades are generally between

View solution

Q. If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

View solution

Q. The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as

View solution

Q. For centrifugal pump impeller, the maximum value of the vane exit angle is

View solution

Q. In a reaction turbine, the pressure head of water, while flowing over the vanes, is converted into kinetic head before leaving the wheel.

View solution

Q. Manometric head, in case of a centrifugal pump, is equal to

View solution

Q. The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is

View solution

Q. The maximum number of jets, generally, employed in an impulse turbine without jet interference are

View solution

Q. In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.

View solution

Q. Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)

View solution

Q. A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the

View solution

Q. When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.

View solution

Q. The speed of a turbine runner is

View solution

Q. Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

View solution