In transformer, bushing failure occurs due to<br/>(i) transformer vibrations<br/>(ii) dielectric losses<br/>(ii) partial discharge

MGVCL Exam Paper (30-07-2021 Shift 2)
In transformer, bushing failure occurs due to
(i) transformer vibrations
(ii) dielectric losses
(ii) partial discharge

(i) and (iii) only

(i), (ii) and (iii)

(i) and (ii) only

(ii) and (iii) only

(i) and (iii) only

(i), (ii) and (iii)

(i) and (ii) only

(ii) and (iii) only

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MGVCL Exam Paper (30-07-2021 Shift 2)
Operating system is

a program that runs during log off

a program that runs for short duration

a layer between the user and the hardware

a program that runs during log off

a program that runs for short duration

a layer between the user and the hardware

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MGVCL Exam Paper (30-07-2021 Shift 2)
A sudden, non power frequency change in the steady state condition of voltage or current that is bidirectional in polarity is called as

Impulsive transient

Oscillatory transients

Harmonic

Distortion

Impulsive transient

Oscillatory transients

Harmonic

Distortion

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a typical DC micro grid, hybrid storage system is a combination of

Lead acid battery and ultra capacitor / super capacitor

Lead acid battery and Capacitor

None of these

Lead acid battery and Lithium ion battery

Lead acid battery and ultra capacitor / super capacitor

Lead acid battery and Capacitor

None of these

Lead acid battery and Lithium ion battery

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MGVCL Exam Paper (30-07-2021 Shift 2)
Which of the following does the term 'feeder automation' include?

All of these

automatic reclosing

substation reactive power control

feeder remote point voltage control

All of these

automatic reclosing

substation reactive power control

feeder remote point voltage control

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MGVCL Exam Paper (30-07-2021 Shift 2)
A MOSFET rated for 15 A, carries a periodic current as shown in figure. The ON state resistance of the MOSFET is 0.15 Ω. The average ON state loss in the MOSFET is

3.8 W

15 W

33.8 W

7.5 W

3.8 W

15 W

33.8 W

7.5 W

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

MGVCL Exam Paper (30-07-2021 Shift 2) In transformer, bushing failure occurs due to(i) transformer vibrations(ii) dielectric losses(ii) partial discharge

MGVCL Exam Paper (30-07-2021 Shift 2) Operating system is

MGVCL Exam Paper (30-07-2021 Shift 2) A sudden, non power frequency change in the steady state condition of voltage or current that is bidirectional in polarity is called as

MGVCL Exam Paper (30-07-2021 Shift 2) In a typical DC micro grid, hybrid storage system is a combination of

MGVCL Exam Paper (30-07-2021 Shift 2) Which of the following does the term 'feeder automation' include?

MGVCL Exam Paper (30-07-2021 Shift 2) A MOSFET rated for 15 A, carries a periodic current as shown in figure. The ON state resistance of the MOSFET is 0.15 Ω. The average ON state loss in the MOSFET is

MGVCL Exam Paper (30-07-2021 Shift 2)
In transformer, bushing failure occurs due to
(i) transformer vibrations
(ii) dielectric losses
(ii) partial discharge

MGVCL Exam Paper (30-07-2021 Shift 2)
Operating system is

MGVCL Exam Paper (30-07-2021 Shift 2)
A sudden, non power frequency change in the steady state condition of voltage or current that is bidirectional in polarity is called as

MGVCL Exam Paper (30-07-2021 Shift 2)
In a typical DC micro grid, hybrid storage system is a combination of

MGVCL Exam Paper (30-07-2021 Shift 2)
Which of the following does the term 'feeder automation' include?

MGVCL Exam Paper (30-07-2021 Shift 2)
A MOSFET rated for 15 A, carries a periodic current as shown in figure. The ON state resistance of the MOSFET is 0.15 Ω. The average ON state loss in the MOSFET is