In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is

Power Systems
In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is

25 Ω

250 Ω

1000 Ω

500 Ω

25 Ω

250 Ω

1000 Ω

500 Ω

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Power Systems
To reduce the radio interference which line is/are transposed?

Power line

None of these

Both power and telecommunication lines

either 1 or 2

Power line

None of these

Both power and telecommunication lines

either 1 or 2

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Power Systems
Condition for maximum voltage regulation

cosφ = X/R

cosφ = R/X

tanφ = X/R

tanφ = R/X

cosφ = X/R

cosφ = R/X

tanφ = X/R

tanφ = R/X

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Power Systems
The conductor carries more current on surface as compared to core. This is called as

skin effect

unsymmetrical fault

All of these

corona effect

skin effect

unsymmetrical fault

All of these

corona effect

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Power Systems
Which of following statement are false

In nuclear power plants, chain reaction is controlled by cadmium rods.

In a nuclear reactor, multiplication factor is kept almost equal to one.

A thermal reactor needs a moderator material.

Nuclear power plants are used as peak load plants only.

In nuclear power plants, chain reaction is controlled by cadmium rods.

In a nuclear reactor, multiplication factor is kept almost equal to one.

A thermal reactor needs a moderator material.

Nuclear power plants are used as peak load plants only.

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Power Systems
Critical visual voltage is the voltage at which

corona is just initiated

corona is visible with blue or violet colour

both 1 and 2

None of these

corona is just initiated

corona is visible with blue or violet colour

both 1 and 2

None of these

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Power Systems

Power Systems In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is

Power Systems To reduce the radio interference which line is/are transposed?

Power Systems Condition for maximum voltage regulation

Power Systems The conductor carries more current on surface as compared to core. This is called as

Power Systems Which of following statement are false

Power Systems Critical visual voltage is the voltage at which

Power Systems
In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is

Power Systems
To reduce the radio interference which line is/are transposed?

Power Systems
Condition for maximum voltage regulation

Power Systems
The conductor carries more current on surface as compared to core. This is called as

Power Systems
Which of following statement are false

Power Systems
Critical visual voltage is the voltage at which