Consider the following statements associated with Buchholz's relays.<br/>Statement 1: Buchholz's relay is a current operated device.<br/>Statement 2 : Buchholz's relay is placed between the transformer tank and the conservator.

MGVCL Exam Paper (30-07-2021 Shift 2)
Consider the following statements associated with Buchholz's relays.
Statement 1: Buchholz's relay is a current operated device.
Statement 2 : Buchholz's relay is placed between the transformer tank and the conservator.

Statement 1 is FALSE and Statement 2 is TRUE

Both Statement 1 and Statement 2 are TRUE

Statement 1 is TRUE and Statement 2 is FALSE

Both Statement 1 and Statement 2 are FALSE

Statement 1 is FALSE and Statement 2 is TRUE

Both Statement 1 and Statement 2 are TRUE

Statement 1 is TRUE and Statement 2 is FALSE

Both Statement 1 and Statement 2 are FALSE

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MGVCL Exam Paper (30-07-2021 Shift 2)
A three-phase, 4-pole, 50 Hz induction motor runs at 1425 rpm. Find out the percentage slip of the induction motor.

4%

3%

6%

5%

4%

3%

6%

5%

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

feeder remote point voltage control

substation reactive power control

All of these

automatic reclosing

feeder remote point voltage control

substation reactive power control

All of these

automatic reclosing

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MGVCL Exam Paper (30-07-2021 Shift 2)
If the velocity of electromagnetic wave in free space is 3 × 10⁸ m/s, then the velocity in a medium with εr of 4.5 and μr of 2 would be

3 × 10⁸ m/s

9 × 10⁸ m/s

27 × 10⁸ m/s

1 × 10⁸ m/s

3 × 10⁸ m/s

9 × 10⁸ m/s

27 × 10⁸ m/s

1 × 10⁸ m/s

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MGVCL Exam Paper (30-07-2021 Shift 2)
Interposing current-transformer (CT) is used in differential protection of a transformer to

minimize the effect of saturation of the main CTs

increase the sensitivity of the relay

match the standard ratio of CTs used on both sides of the transformer winding

limit the main CT secondary current

minimize the effect of saturation of the main CTs

increase the sensitivity of the relay

match the standard ratio of CTs used on both sides of the transformer winding

limit the main CT secondary current

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

(ii) and (iii) only

(i) and (iii) only

(i) and (ii) only

(i), (ii) and (iii)

(ii) and (iii) only

(i) and (iii) only

(i) and (ii) only

(i), (ii) and (iii)

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

MGVCL Exam Paper (30-07-2021 Shift 2) Consider the following statements associated with Buchholz's relays.Statement 1: Buchholz's relay is a current operated device.Statement 2 : Buchholz's relay is placed between the transformer tank and the conservator.

MGVCL Exam Paper (30-07-2021 Shift 2) A three-phase, 4-pole, 50 Hz induction motor runs at 1425 rpm. Find out the percentage slip of the induction motor.

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) If the velocity of electromagnetic wave in free space is 3 × 10⁸ m/s, then the velocity in a medium with εr of 4.5 and μr of 2 would be

MGVCL Exam Paper (30-07-2021 Shift 2) Interposing current-transformer (CT) is used in differential protection of a transformer to

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)
Consider the following statements associated with Buchholz's relays.
Statement 1: Buchholz's relay is a current operated device.
Statement 2 : Buchholz's relay is placed between the transformer tank and the conservator.

MGVCL Exam Paper (30-07-2021 Shift 2)
A three-phase, 4-pole, 50 Hz induction motor runs at 1425 rpm. Find out the percentage slip of the induction motor.

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)
If the velocity of electromagnetic wave in free space is 3 × 10⁸ m/s, then the velocity in a medium with εr of 4.5 and μr of 2 would be

MGVCL Exam Paper (30-07-2021 Shift 2)
Interposing current-transformer (CT) is used in differential protection of a transformer to

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