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You Are On Multi Choice Question Bank SET 1436

71801. In a reaction turbine, the pressure head of water, while flowing over the vanes, is converted into kinetic head before leaving the wheel.



71802. Manometric head, in case of a centrifugal pump, is equal to





71803. How many players make a Basket Ball team?





71804. 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.



71805. The capacity of a hydraulic accumulator is generally specified as the maximum amount of energy stored.



71806. The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is





71807. The breast water wheels are those in which the wheel runs partly by the weight of water and partly by the impulse of water.



71808. The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as





71809. The impeller of a centrifugal pump may have





71810. Kinematic similarity is said to exist between the model and the prototype, if both of them





71811. Narasimhan Committee was appointed to make recommendations on the?





71812. A reciprocating pump is suitable for less discharge and higher heads.



71813. The flow ratio of Francis turbine is defined as the ratio of the





71814. Dynamic similarity is said to exist between the model and the prototype, if both of them





71815. Fear of water?





71816. A draft tube is used with impulse turbines.



71817. A hydraulic ram is a device used to





71818. Overall efficiency of a centrifugal pump is the ratio of





71819. In an inward flow reaction turbine





71820. The working of which of the following hydraulic units is based on Pascal's law?





71821. The hydraulic efficiency of a reaction turbine, is the ratio of





71822. In order to avoid cavitation in centrifugal pumps





71823. A hydraulic intensifier is a device used to increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure.



71824. The discharge through a reaction turbine __________ with the increase in unit speed.




71825. In a mixed flow reaction turbine, the flow of water is partly radial and partly axial.



71826. A Pelton wheel with one nozzle is preferred for a specific speed between 35 to 60 r.p.m.



71827. Which of the following pump is generally used to pump highly viscous fluid?





71828. 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.



71829. By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power.The saving in case of a double acting reciprocating pump is





71830. In a reciprocating pump, air vessels are used to





71831. In a Francis turbine, the pressure at inlet is __________ that at outlet.



71832. If the ratio's of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.





71833. A Pelton wheel working under a constant head and discharge, has maximum efficiency when the speed ratio is





71834. By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is





71835. If the Francis turbine is run below 50 percent head for a long period, it will not only lose its efficiency but also the cavitation danger will become more serious.



71836. The number of Islands in Lakshadweep?





71837. In a Francis turbine runner, the number of blades are generally between





71838. The relation between hydraulic efficiency (ηh), mechanical efficiency (ηm) and overall efficiency (ηo) ) is





71839. In a centrifugal pump, the water enters the impeller __________ and leaves the vanes axially.



71840. A Kaplan turbine is an axial flow reaction turbine.



71841. A Pelton wheel develops 1750 kW under a head of 100 metres while running at 200 r.p.m. and discharging 2500 litres of water per second. The unit speed of the wheel is





71842. The hydraulic efficiency of an impulse turbine is maximum when velocity of wheel is __________ of the jet velocity,





71843. The specific speed of a hydraulic turbine depends upon





71844. The depth of the bucket for a Pelton wheel is generally __________ the diameter of jet.





71845. An impulse turbine is used for





71846. 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.



71847. The cavitation in reaction turbines is avoided, to a great extent by





71848. Which type of the pump is different from others in the same group?





71849. The power developed by a turbine is (where H = Head of water under which the turbine is working)





71850. She spent three hours .................. over the manuscript.?





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