The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is

Related MCQs

• 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 principle of jet propulsion is used in driving the ships and aeroplanes.
• The speed ratio of a Francis turbine is defined as the ratio of the theoretical jet velocity to the peripheral speed at inlet.
• A jet of water enters and leaves a fixed curved vane tangentially. The force of jet along perpendicular to the vane is zero.
• The maximum number of jets, generally, employed in an impulse turbine without jet interference are
• In a Francis turbine, the pressure at inlet is
• The head available at the inlet of the turbine is known as net or effective head.
• A Pelton wheel working under a constant head and discharge, has maximum efficiency when the speed ratio is
• The efficiency of a centrifugal pump will be maximum when the blades are bent backward.