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POWER SYSTEMS

Power Systems
Galvanised steel is generally used as

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

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

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

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Power Systems
Objectives of power system is/are

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

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

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

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Power Systems
Advantages of higher transmission voltage is/are

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

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