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Power Systems

Power Systems
Lightning arresters are made up of which material?

 any of the above
 copper
 silicon oxide
 silver

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Power Systems
Pumped storage plant is a

 peak load plant
 both 1 and 2
None of these
 base load plant

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Power Systems
Critical disruptive voltage is a voltage at which

 corona is just initiated
 corona is visible with blue or violet colour
 both 1 and 2
 nether 1 nor 2

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

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

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Power Systems
Which of the following statement is/are true regarding infinite line?

 It has infinite length
 It has infinite voltage
 It maintains the constant voltage
 both 2 and 3

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Power Systems
Which type of connection is employed for current transformers for the protection of delta- star connected 3-phase transformer?

 delta-delta
 star-star
 star-delta
 delta-star

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