The jet ratio is defined as the ratio of the

Related MCQs

• The speed ratio of a Francis turbine is defined as the ratio of the theoretical jet velocity to the peripheral speed at inlet.
• 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
• A jet of water enters and leaves a fixed curved vane tangentially. The force of jet along perpendicular to the vane is zero.
• The flow ratio of Francis turbine is defined as the ratio of 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 principle of jet propulsion is used in driving the ships and aeroplanes.
• Braking jet in an impulse turbine is used
• The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is
• The maximum number of jets, generally, employed in an impulse turbine without jet interference are