The single line diagram of the simple power system is shown in figure the corresponding reactance diagram is

MGVCL Exam Paper (30-07-2021 Shift 2)
The single line diagram of the simple power system is shown in figure the corresponding reactance diagram is

D

B

C

A

D

B

C

A

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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

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

increase the sensitivity of the relay

limit the main CT secondary current

minimize the effect of saturation of the main CTs

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

increase the sensitivity of the relay

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

(i) and (ii) only

(i) and (iii) only

(i), (ii) and (iii)

(ii) and (iii) only

(i) and (ii) only

(i) and (iii) only

(i), (ii) and (iii)

(ii) and (iii) only

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MGVCL Exam Paper (30-07-2021 Shift 2)
A generating station having 'n' section busbars each rated at Q kVA with ×% reactance is connected on the tie-bars systems through busbar reactances of b%. Determine the short circuit kVA if a 3-phase fault takes place on one section.

Q[(1/x) + (n-1)/(bn+x)]

Q[(1/x) - (n+1)/(bn-x)]

Q[(1/x) + (n+1)/(bn+x)]

Q[(1/x) + (n+1)/(bn-x)]

Q[(1/x) + (n-1)/(bn+x)]

Q[(1/x) - (n+1)/(bn-x)]

Q[(1/x) + (n+1)/(bn+x)]

Q[(1/x) + (n+1)/(bn-x)]

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MGVCL Exam Paper (30-07-2021 Shift 2)
Choose the best option from the given alternatives which can be substituted for the given word/sentence.
A person who kills somebody especially for political reasons

Pauper

Assassin

Alien

Stoic

Pauper

Assassin

Alien

Stoic

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MGVCL Exam Paper (30-07-2021 Shift 2)
A single phase 240 V, 1 kW heater is connected across single phase 240 V, 50 Hz supply through an SCR. For firing angle delay of 90˚, calculate the power absorbed in the heater element.

300 W

250 W

275 W

225 W

300 W

250 W

275 W

225 W

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

MGVCL Exam Paper (30-07-2021 Shift 2) The single line diagram of the simple power system is shown in figure the corresponding reactance diagram is

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) A generating station having 'n' section busbars each rated at Q kVA with ×% reactance is connected on the tie-bars systems through busbar reactances of b%. Determine the short circuit kVA if a 3-phase fault takes place on one section.

MGVCL Exam Paper (30-07-2021 Shift 2) Choose the best option from the given alternatives which can be substituted for the given word/sentence.A person who kills somebody especially for political reasons

MGVCL Exam Paper (30-07-2021 Shift 2) A single phase 240 V, 1 kW heater is connected across single phase 240 V, 50 Hz supply through an SCR. For firing angle delay of 90˚, calculate the power absorbed in the heater element.

MGVCL Exam Paper (30-07-2021 Shift 2)
The single line diagram of the simple power system is shown in figure the corresponding reactance diagram is

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)
A generating station having 'n' section busbars each rated at Q kVA with ×% reactance is connected on the tie-bars systems through busbar reactances of b%. Determine the short circuit kVA if a 3-phase fault takes place on one section.

MGVCL Exam Paper (30-07-2021 Shift 2)
Choose the best option from the given alternatives which can be substituted for the given word/sentence.
A person who kills somebody especially for political reasons

MGVCL Exam Paper (30-07-2021 Shift 2)
A single phase 240 V, 1 kW heater is connected across single phase 240 V, 50 Hz supply through an SCR. For firing angle delay of 90˚, calculate the power absorbed in the heater element.