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You Are On Multi Choice Question Bank SET 1435

71751. During sensible heating of air __________ decreases.

71752. The overall coefficient of heat transfer is used in problems of

71753. The boiling point of R-12 is about - 30°C.

71754. The wet bulb temperature during sensible heating of air

71755. The Satyagraha Sabha was formed by Mahatma Gandhi at?

71756. Indian National Army was founded by:?

71757. Which of the following statements in regard to the Maurya administration is correct?

71758. In a refrigerating machine, heat rejected is __________ heat absorbed.

71759. Where did the Indian Ocean Rim Association for Regional Co-operation (IORARC) formally launch?

71760. The first Kerala State Kathakali Award has been given to?

71761. The famous literary work Tahquiq-i-Hind was written by?

71762. Spot the correctly spelt word:?

71763. Who among the following received the Order of the Baobab in Silver award?

71764. Discharge of a centrifugal pump is

71765. 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 power of the wheel is

71766. The static head of a centrifugal pump is equal to the __________ of suction head and delivery head.

71767. The ratio of actual work available at the turbine to the energy imparted to the wheel is known as __________ efficiency.

71768. Geometric similarity is said to exist between the model and the prototype, if both of them

71769. The speed of a turbine runner is

71770. The original name of Sriramakrishna Paramhamsa?

71771. Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

71772. In a reaction turbine, the draft tube is used

71773. The power produced by the reaction turbine is __________ to the head of water.

71774. Slip of a reciprocating pump is defined as the

71775. The efficiency of a centrifugal pump will be maximum when the blades are bent backward.

71776. Multi-stage centrifugal pumps are used to

71777. The specific speed of a centrifugal pump, delivering 750 litres of water per second against a head of 15 metres at 725 r.p.m., is

71778. Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in metres, and Hd = Delivery head in metres)

71779. Which of the following pump is preferred for flood control and irrigation applications?

71780. The efficiency of a Pelton wheel working under constant head __________ with the increase in power.

71781. The discharge of a centrifugal pump working under constant head __________ with the speed.

71782. Before the rise of Ranjith Singh, Punjab was under the control of?

71783. Delivery head of water of a centrifugal pump is inversely proportional to diameter of its impeller.

71784. 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.)

71785. Which of the following turbine is preferred for 0 to 25 m head of water?

71786. The speed ratio of a Francis turbine is defined as the ratio of the theoretical jet velocity to the peripheral speed at inlet.

71787. The overall efficiency of a reaction turbine is the ratio of

71788. Work done by a turbine __________ upon the weight of water flowing per second.

71789. The maximum number of jets, generally, employed in an impulse turbine without jet interference are

71790. In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.

71791. Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)

71792. A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the

71793. When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.

71794. A Francis turbine is used when the available head of water is

71795. The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is

71796. A hydraulic coupling belongs to the category of

71797. The principle of jet propulsion is used in driving the ships and aeroplanes.

71798. In the casing of a centrifugal pump, the kinetic energy of the water is converted into pressure energy before the water leaves the casing.

71799. The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as

71800. For centrifugal pump impeller, the maximum value of the vane exit angle is

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