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MGVCL Exam Paper (30-07-2021 Shift 2)
Tree Topology

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Web layout

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Page Orientation

Paper size

Web layout

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MGVCL Exam Paper (30-07-2021 Shift 2)
The magnitude of the generator earth-fault current is limited by

inserting the stabilizing resistance in series with the relay

controlling field exciter

using higher rating CTs

inserting suitable resistance in neutral grounding circuit

inserting the stabilizing resistance in series with the relay

controlling field exciter

using higher rating CTs

inserting suitable resistance in neutral grounding circuit

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a short circuit test on circuit breaker, time to reach the peak re-striking voltage is 50 µs with the peak restriking voltage of 100 kV. Determine average RRRV (Rate of rise re-striking voltage)?

3 x 10⁶ kV/sec

4 x 10⁶ kV/sec

2 x 10⁶ kV/sec

1 x 10⁶ kV/sec

3 x 10⁶ kV/sec

4 x 10⁶ kV/sec

2 x 10⁶ kV/sec

1 x 10⁶ kV/sec

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MGVCL Exam Paper (30-07-2021 Shift 2)
A THHN conductor will have a 60˚C termination on one end and a 75˚C termination on the other, which ampacity column will be used?

90˚C column

60˚C column

75˚C column

None of these

90˚C column

60˚C column

75˚C column

None of these

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MGVCL Exam Paper (30-07-2021 Shift 2)
Consider a solar PV plant with the following specific conditions: Analysis period: 1 year
Measured average solar irradiation intensity in 1 year: 120 kWh/m²
Generator area of the PV plant: 10 m²
Efficiency factor of the PV modules: 15%
Electrical energy actually exported by plant to grid: 110 kWh
Calculate the performance ratio.

0.6111

0.7111

0.5111

0.8111

0.6111

0.7111

0.5111

0.8111

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MGVCL Exam Paper (30-07-2021 Shift 2)
The voltage applied to a transformer primary is increased keeping V/f constant. With this, the core loss and the magnetizing current (Im)

increases, remains constant

decreases, increases

remains constant, decreases

increases, increases

increases, remains constant

decreases, increases

remains constant, decreases

increases, increases

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MGVCL Exam Paper (30-07-2021 Shift 2)

MGVCL Exam Paper (30-07-2021 Shift 2) Tree Topology

MGVCL Exam Paper (30-07-2021 Shift 2) The magnitude of the generator earth-fault current is limited by

MGVCL Exam Paper (30-07-2021 Shift 2) In a short circuit test on circuit breaker, time to reach the peak re-striking voltage is 50 µs with the peak restriking voltage of 100 kV. Determine average RRRV (Rate of rise re-striking voltage)?

MGVCL Exam Paper (30-07-2021 Shift 2) A THHN conductor will have a 60˚C termination on one end and a 75˚C termination on the other, which ampacity column will be used?

MGVCL Exam Paper (30-07-2021 Shift 2) The voltage applied to a transformer primary is increased keeping V/f constant. With this, the core loss ____ and the magnetizing current (Im) ____

MGVCL Exam Paper (30-07-2021 Shift 2)
Tree Topology

MGVCL Exam Paper (30-07-2021 Shift 2)
The magnitude of the generator earth-fault current is limited by

MGVCL Exam Paper (30-07-2021 Shift 2)
In a short circuit test on circuit breaker, time to reach the peak re-striking voltage is 50 µs with the peak restriking voltage of 100 kV. Determine average RRRV (Rate of rise re-striking voltage)?

MGVCL Exam Paper (30-07-2021 Shift 2)
A THHN conductor will have a 60˚C termination on one end and a 75˚C termination on the other, which ampacity column will be used?

MGVCL Exam Paper (30-07-2021 Shift 2)
The voltage applied to a transformer primary is increased keeping V/f constant. With this, the core loss and the magnetizing current (Im)