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

500 Ω

1000 Ω

250 Ω

25 Ω

500 Ω

1000 Ω

250 Ω

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Power Systems
Which of following statement are false

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.

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.

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Power Systems
The per unit value of a 2 ohm resistor at 100 MVA and 10 kV base voltage is

0.5 pu

4 pu

0.2 pu

2 pu

0.5 pu

4 pu

0.2 pu

2 pu

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Power Systems
The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are

100, 0.4

4, 0.4

100, 10

4, 10

100, 0.4

4, 0.4

100, 10

4, 10

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Power Systems
The shape of the disc of an induction disc relay is

spiral.

elliptical.

circular.

none of these.

spiral.

elliptical.

circular.

none of these.

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Power Systems
The characteristic impedance of a transmission line is

Directly proportional to its length.

Independent of its length.

Inversely proportional to square root of its length.

Directly proportional to square root of its length.

Directly proportional to its length.

Independent of its length.

Inversely proportional to square root of its length.

Directly proportional to square root of its length.

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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 Which of following statement are false

Power Systems The per unit value of a 2 ohm resistor at 100 MVA and 10 kV base voltage is

Power Systems The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are

Power Systems The shape of the disc of an induction disc relay is

Power Systems The characteristic impedance of a transmission line 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

Power Systems
Which of following statement are false

Power Systems
The per unit value of a 2 ohm resistor at 100 MVA and 10 kV base voltage is

Power Systems
The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are

Power Systems
The shape of the disc of an induction disc relay is

Power Systems
The characteristic impedance of a transmission line is