The hydraulic efficiency of an impulse turbine is maximum when velocity of wheel is

Related MCQs

• The overall efficiency of an impulse turbine is the ratio of the actual power produced by the turbine to the energy actually supplied by the turbine.
• The hydraulic efficiency of an impulse turbine is the
• In an impulse turbine, the jet of water impinges on the bucket with a low velocity and after flowing over the vanes, leaves with a high velocity.
• The mechanical efficiency of an impulse turbine is
• The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship, will be maximum when the relative velocity of the jet and ship is equal to twice the velocity of the ship.
• A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is
• The maximum number of jets, generally, employed in an impulse turbine without jet interference are
• The hydraulic efficiency of a reaction turbine, is the ratio of
• The breast water wheels are those in which the wheel runs partly by the weight of water and partly by the impulse of water.
• The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which