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You Are On Multi Choice Question Bank SET 1478

73901. Combustuion of fuel takes place __________ the engine cylinder of a steam engine.

73902. The forced circulation of water does not take place in

73903. A device used to heat feed water by utilising the heat in me exhaust flue gases before leaving through the chimny, is known as

73904. The factor of evaporation for all boilers is always

73905. The ratio of the actual vacuum to the ideal vacuum in a condenser is called

73906. The Puranas are........ in number.?

73907. An air preheater

73908. A condenser in a steam power plant

73909. The amount of water evaporated in kg per kg of fuel burnt is called

73910. In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is __________ the lowpressure cylinder.

73911. Babcock and Wilcox boiler is a stationary type of water tube boiler.

73912. A Cochran boiler is a horizontal multi-tubular boiler.

73913. In forced circulation steam boilers, the force is applied

73914. In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as

73915. A condenser maintains a low pressure (below atmospheric) so as to obtain the maximum possible energy from steam and thus to secure a high efficiency.

73916. The amount of water evaporated from and at 100° C into dry and saturated steam is called evaporative capacity of a boiler.

73917. The difference between the atmospheric pressure and the absolute pressure is known as vacuum in a condenser.

73918. In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is

73919. The ratio of the energy required to produce the artificial draught (expressed in metres head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as

73920. The function of a piston in a steam engine is

73921. The high steam and low water safety valve is not used in

73922. In a Woolf type compound engine, the high pressure and low pressure cylinders

73923. The actual power generated in the engine cylinder is called

73924. Which of the following is correct ? (where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)

73925. The working pressure range for a La-Mont boiler is

73926. The draught in locomotive boilers is produced by a

73927. The ratio of heat actually used in producing the steam to the heat liberated in the furnace is known as equivalent evaporation from and at 100° C.

73928. There is about 15 to 20% of coal saving when an economiser is used in a boiler.

73929. An economiser is generally placed between

73930. In fire tube boilers

73931. The efficiency of a boiler is defined as

73932. The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

73933. A valve installed between the boiler and the feed pump is

73934. The principal function of a stop valve is to

73935. The length of Cornish boiler varies from

73936. The indicated thermal efficiency is defined as the

73937. In surface condensers, the condensate and the cooling water mixes up.

73938. A water level indicator is a device to indicate the exact water level in the boiler at any instant.

73939. A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as

73940. The value of diagram factor depends upon

73941. The function of an eccentric rod is

73942. A receiver type compound engine, requires a lighter flywheel.

73943. The function of a valve rod is

73944. A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called

73945. The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called

73946. In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of

73947. A device used to empty the boiler whenever required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler, is called blow off cock.

73948. Clearance ratio is the ratio of

73949. The Asokan inscription which gives an account of the Kalinga war and its effects is?

73950. In a boiler, the heat is lost

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