### Related Questions

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# The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is

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# The ratio of actual work available at the turbine to the energy imparted to the wheel is known as ________ efficiency.

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# The speed of a turbine runner is

A. Directly proportional to H^{1/2}

B. Inversely proportional to H^{1/2}

C. Directly proportional to H^{3/2}

D. Inversely proportional to H^{3/2}

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# For small discharge at high pressure, following pump is preferred

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# Indicator diagram of a reciprocating pump is a graph between

B. Pressure in cylinder vs. swept volume

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# The undershot water wheels are those in which

A. The wheel runs entirely by the weight of water

B. The wheel runs entirely by the impulse of water

C. The wheel runs partly by the weight of water and partly by the impulse of water

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# Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of

A. High initial and maintenance cost

C. Lower speed of operation

D. Necessity of air vessel

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# The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)

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# The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston, and N = Speed of crank in r.p.m.)

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# A Francis turbine is used when the available head of water is

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# A hydraulic coupling belongs to the category of

A. Power absorbing machines

B. Power developing machines

C. Energy transfer machines

D. Energy generating machines

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# A turbine pump is basically a centrifugal pump equipped additionally with

B. Backward curved blades

C. Vaned diffusion casing

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# The cavitation in a hydraulic machine is mainly due to

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# Which of the following statement is correct?

A. In an impulse turbine, the water impinges on the buckets with pressure energy.

B. In a reaction turbine, the water glides over the moving vanes with kinetic energy.

C. In an impulse turbine, the pressure of the flowing water remains unchanged and is equal to atmospheric pressure.

D. In a reaction turbine, the pressure of the flowing water increases after gliding over the vanes.

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# The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).

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# The Fourneyron turbine is _________ reaction turbine.

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# Any change in load is adjusted by adjusting following parameter on turbine

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# According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary

A. Directly as the air or gas density

B. Inversely as square root of density

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# Casting of a centrifugal pump is designed so as to minimize

D. Loss of kinetic energy

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

A. Have identical velocities

B. Are equal in size and shape

C. Are identical in shape, but differ only in size

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# Francis, Kaplan and propeller turbines fall under the category of

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# The relation between hydraulic efficiency (η_{h}), mechanical efficiency (η_{m}) and overall efficiency (η_{o}) is

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# The Thomson's turbine is __________ reaction turbine.

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# A turbine develops 10000 kW under a head of 25 metres at 135 r.p.m. Its specific speed is

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# Low specific speed of turbine implies it is

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# The static head of a centrifugal pump is equal to the ________ of suction head and delivery head.

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# The efficiency of a Pelton wheel working under constant head ________ with the increase in power.

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# The unit speed of the turbine runner is

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

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# The specific speed of a turbine is given by the equation