The current in the coil of a large electromagnet falls from 6 A to 2 A in 10 ms. The induced emf across the coil is 100 V. Find the self-inductance of the coil.

MGVCL Exam Paper (30-07-2021 Shift 3)
The current in the coil of a large electromagnet falls from 6 A to 2 A in 10 ms. The induced emf across the coil is 100 V. Find the self-inductance of the coil.

0.5 H

1.25 H

0.25 H

0.75 H

0.5 H

1.25 H

0.25 H

0.75 H

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MGVCL Exam Paper (30-07-2021 Shift 3)
The sending end and receiving end voltages of the short transmission line are 150 kV and 120 kV respectively. Calculate its percentage voltage regulation.

30%

20%

40%

25%

30%

20%

40%

25%

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MGVCL Exam Paper (30-07-2021 Shift 3)
What are the main challenges that the electric grid faces?

Reliability and Power Quality is Declining

All of these

Increase in Energy Demand

Global rise in temperature

Reliability and Power Quality is Declining

All of these

Increase in Energy Demand

Global rise in temperature

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MGVCL Exam Paper (30-07-2021 Shift 3)
A 10 A, Type C Miniature Circuit Breaker (MCB) will trip at fault currents

between 50 A and 100 A

greater than 100 A

between 10 A and 50 A

less than 10 A

between 50 A and 100 A

greater than 100 A

between 10 A and 50 A

less than 10 A

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MGVCL Exam Paper (30-07-2021 Shift 3)
The short circuit current of a solar cell is

changes logarithmically with radiation

inversely proportional to radiation intensity

directly proportional to radiation intensity

constant and not affected by radiation

changes logarithmically with radiation

inversely proportional to radiation intensity

directly proportional to radiation intensity

constant and not affected by radiation

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MGVCL Exam Paper (30-07-2021 Shift 3)
Murray loop test is performed on a faulty cable 300 m long. At balance, the resistance connected to the faulty core was set at 20 Ω and the resistance of the resistor connected to the sound core was 40 Ω. Calculate the distance of the fault point from the test end.

100 m

200 m

300 m

400 m

100 m

200 m

300 m

400 m

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MGVCL Exam Paper (30-07-2021 Shift 3)

MGVCL Exam Paper (30-07-2021 Shift 3) The current in the coil of a large electromagnet falls from 6 A to 2 A in 10 ms. The induced emf across the coil is 100 V. Find the self-inductance of the coil.

MGVCL Exam Paper (30-07-2021 Shift 3) The sending end and receiving end voltages of the short transmission line are 150 kV and 120 kV respectively. Calculate its percentage voltage regulation.

MGVCL Exam Paper (30-07-2021 Shift 3) What are the main challenges that the electric grid faces?

MGVCL Exam Paper (30-07-2021 Shift 3) A 10 A, Type C Miniature Circuit Breaker (MCB) will trip at fault currents

MGVCL Exam Paper (30-07-2021 Shift 3) The short circuit current of a solar cell is

MGVCL Exam Paper (30-07-2021 Shift 3)
The current in the coil of a large electromagnet falls from 6 A to 2 A in 10 ms. The induced emf across the coil is 100 V. Find the self-inductance of the coil.

MGVCL Exam Paper (30-07-2021 Shift 3)
The sending end and receiving end voltages of the short transmission line are 150 kV and 120 kV respectively. Calculate its percentage voltage regulation.

MGVCL Exam Paper (30-07-2021 Shift 3)
What are the main challenges that the electric grid faces?

MGVCL Exam Paper (30-07-2021 Shift 3)
A 10 A, Type C Miniature Circuit Breaker (MCB) will trip at fault currents

MGVCL Exam Paper (30-07-2021 Shift 3)
The short circuit current of a solar cell is