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POWER SYSTEMS

Power Systems
Galvanised steel is generally used as

All of these
 stray wire.
 structural components.
 earth wire.

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Power Systems
Plug setting of a relay can be altered by varying

 none of these.
 air gap of magnetic path.
 no. of ampere-turns.
 adjustable back up stop.

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Power Systems
Objectives of power system is/are

 nether 1 nor 2
 Rated voltage and frequency has to be supplied to the consumers
 both 1 and 2
 Cost of electrical energy per KWh is to be minimum

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Power Systems
The main objectives of electrical power transmission is/are

 Voltage regulation of the transmission line must be zero or minimum
 both 1 and 2
 Transmission system must be more efficient with minimum line losses
 nether 1 nor 2

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Power Systems
Advantages of higher transmission voltage is/are

 Power transfer capability of the transmission line is increased
 Area of cross section and volume of the conductor is reduced
All of these
 Transmission line losses are reduced

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