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Generation of Electrical Energy

Generation of Electrical Energy
Evaporative type of condenser has

None of these
water in pipes surrounded by steam
either (A) or (B)
steam in pipes surrounded by water

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Generation of Electrical Energy
The cheapest plan in operations and Maintenance

Diesel power plant
Nuclear power plant
Hydroelectric plant
Steam power plant

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Generation of Electrical Energy
The commonly used material of condenser tubes is

Cast iron
Admiralty brass
Mild steel
Aluminum

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Generation of Electrical Energy
The isentropic expansion of steam through nozzle for the steam initially dry saturated at inlet is approximated by equation.

pv = C
pv1A = C
pv1i = C
pv

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Generation of Electrical Energy
The overall efficiency of thermal power plant is equal to

Bioler efficiency × turbine efficiency × generator efficiency
Rankine cycle efficiency
Regenerative cycle efficiency
Carnot cycle efficiency

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Generation of Electrical Energy
The average ash content in indian coals is about

20%
10%
5%
15%

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