MECHANICAL ENGINEERING (STEAM BOILERS, ENGINES, NOZZLES & TURBINES) MCQs

The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is

Correct! Wrong!

Carbonation of coal is the process of

Correct! Wrong!

If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton’s law, the pressure in condenser is equal to

Correct! Wrong!

Heating of dry steam above saturation temperature is known as

Correct! Wrong!

Superheating of steam is done at

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The saturation temperature of steam with increase in pressure increases

Correct! Wrong!

Coke is produced by

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The specific heat of superheated steam in kcal/kg is generally of the order of

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On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by

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Hygrometery deals with the

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Efficiency of rankine cycle can be increased by

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Lancashire boiler is of

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Which of the following substance will have same percentage in both proximate and ultimate analysis

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The biggest size of thermal power unit operating in India is

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The diameter of internal flue tubes in a Lancashire boiler compared to its shell is

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Which of the following boilers is best suited to meet fluctuating demands

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The function of injector used in small steam plants is to

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The basic purpose of drum in boiler is to

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Which of the following is a water tube boiler

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The change in internal energy in steam engines equals to

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An ideal regenerative cycle is

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Adiabatic process is

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The number of drums in Benson steam generator is

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The ratio of heat utilised to produce steam and the heat liberated in furnace is known as

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In regenerative air preheater, the heat is transferred

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The safety valve at superheater as compared to drum safety valve setting is set at

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Bomb calorimeter is used to determine

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Caking coals are those which

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Tertiary air is the air used to

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The feed check valve is used in order to

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Deaeration of feed water is carried out because it reduces

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Calorific value of coal is of the order of

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Green coal, in order to be burnt, must be

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Pour point of fuel oil is the

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An economiser in a boiler

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Ultimate analysis of fuel is determination of percentage of

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Which device is used in thermal power plants to reduce level of pollution

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The height of chimney in a power plant is governed by

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With increase in load, convection superheater has

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Thermal efficiency of a thermal power plant is of the order of

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The overall efficiency of thermal power plant is

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Which is not correct statement about the function of furnace

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