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Generation of Electrical Energy

Generation of Electrical Energy
The efficiency of a modern boiler using coal and heat recovery equipment is about

85 to 90%
65 to 70%
25 to 30%
40 to 50%

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Generation of Electrical Energy
In interconnected grid system, more efficient plants are used as

Peak load plant
Both peak & base load plant
None of these
Base load plants

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Generation of Electrical Energy
For the safety of a steam boiler the number of safety valves fitted are

one
four
three
two

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Generation of Electrical Energy
Which of the following coals has the highest calorific value?

Peat
Bituminous
Anthracite coal
Lignite

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Generation of Electrical Energy
The blade of gas turbine rotor are made of

High alloy steel
Carbon steel
High nickel alloy
Stainless steel

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Generation of Electrical Energy
Reheat cycle in steam power plant is used to

utilise heat of flue gases
improve condenser performance
increase thermal efficiency
reduce loss of heat

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