A 200/400 V, 20 kVA, 2-winding transformer is connected as an auto-transformer to transform 600 V to 200 V. Calculate the kVA rating of the auto-transformer.

MGVCL Exam Paper (30-07-2021 Shift 3)
A 200/400 V, 20 kVA, 2-winding transformer is connected as an auto-transformer to transform 600 V to 200 V. Calculate the kVA rating of the auto-transformer.

25 kVA

60 kVA

30 kVA

50 kVA

25 kVA

60 kVA

30 kVA

50 kVA

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MGVCL Exam Paper (30-07-2021 Shift 3)
A conductor having surface density is embedded in a dielectric medium of permittivity. The electric field in the medium is E. If it is known that the pressure p on the conductor surface is equal to the electric energy density in the medium, then p (in SI unit)is given by

σ²/(2ε)

σ²/(2πε)

σ²/(4π)

σ/(4πε)

σ²/(2ε)

σ²/(2πε)

σ²/(4π)

σ/(4πε)

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MGVCL Exam Paper (30-07-2021 Shift 3)
A three phase four pole 50 Hz induction motor has a rotor resistance of 0.02 Ω/phase and stand-still reactance of 0.5 Ω/phase. Calculate the speed at which the maximum torque is developed.

1475 rpm

1525 rpm

1440 rpm

1500 rpm

1475 rpm

1525 rpm

1440 rpm

1500 rpm

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MGVCL Exam Paper (30-07-2021 Shift 3)
Arjuna Award is awarded for the excellence in which field?

Literature

Science

Sports

Mathematics

Literature

Science

Sports

Mathematics

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

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

Reliability and Power Quality is Declining

All of these

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MGVCL Exam Paper (30-07-2021 Shift 3)
If the phase velocity of a plane wave in a perfect dielectric is 0.4 times its value in free space, then what is the relative permittivity of the dielectric?

1.25

6.25

2.5

4.25

1.25

6.25

2.5

4.25

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

MGVCL Exam Paper (30-07-2021 Shift 3) A 200/400 V, 20 kVA, 2-winding transformer is connected as an auto-transformer to transform 600 V to 200 V. Calculate the kVA rating of the auto-transformer.

MGVCL Exam Paper (30-07-2021 Shift 3) A three phase four pole 50 Hz induction motor has a rotor resistance of 0.02 Ω/phase and stand-still reactance of 0.5 Ω/phase. Calculate the speed at which the maximum torque is developed.

MGVCL Exam Paper (30-07-2021 Shift 3) Arjuna Award is awarded for the excellence in which field?

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) If the phase velocity of a plane wave in a perfect dielectric is 0.4 times its value in free space, then what is the relative permittivity of the dielectric?

MGVCL Exam Paper (30-07-2021 Shift 3)
A 200/400 V, 20 kVA, 2-winding transformer is connected as an auto-transformer to transform 600 V to 200 V. Calculate the kVA rating of the auto-transformer.

MGVCL Exam Paper (30-07-2021 Shift 3)
A three phase four pole 50 Hz induction motor has a rotor resistance of 0.02 Ω/phase and stand-still reactance of 0.5 Ω/phase. Calculate the speed at which the maximum torque is developed.

MGVCL Exam Paper (30-07-2021 Shift 3)
Arjuna Award is awarded for the excellence in which field?

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)
If the phase velocity of a plane wave in a perfect dielectric is 0.4 times its value in free space, then what is the relative permittivity of the dielectric?