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), (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

(i) and (iii) only

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MGVCL Exam Paper (30-07-2021 Shift 2)
In the RLC series circuit shown in figure, resonance occurs when the value of C is 20 µF. The supply voltages is v(t) = 20 sin (500t) V. Find the value of L.

5 H

5 mH

0.2 H

0.2 mH

5 H

5 mH

0.2 H

0.2 mH

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MGVCL Exam Paper (30-07-2021 Shift 2)
Find the word which is correctly spelt from the given options.

seriuous

Socialy

Abolishid

Oscillate

seriuous

Socialy

Abolishid

Oscillate

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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)
Match the following shown in figure

B = (ii) & (1)

C = (ii) & (1)

A = (iii) & (2)

A = (i) & (3)

B = (ii) & (1)

C = (ii) & (1)

A = (iii) & (2)

A = (i) & (3)

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MGVCL Exam Paper (30-07-2021 Shift 2)
In the circuit of figure, the switch is closed to position-1 for a long time. At t = 0 the switch position is changed from postion-1 to postion-2. Find an expression for the current i(t).

i(t) = (E/R) cos√(LC) t A

i(t) = (E/R) sin√(LC) t A

i(t) = (E/R) cos[1/√(LC)]t A

i(t) = (E/R) sin[1/√(LC)]t A

i(t) = (E/R) cos√(LC) t A

i(t) = (E/R) sin√(LC) t A

i(t) = (E/R) cos[1/√(LC)]t A

i(t) = (E/R) sin[1/√(LC)]t A

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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) In the RLC series circuit shown in figure, resonance occurs when the value of C is 20 µF. The supply voltages is v(t) = 20 sin (500t) V. Find the value of L.

MGVCL Exam Paper (30-07-2021 Shift 2) Find the word which is correctly spelt from the given options.

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) Match the following shown in figure

MGVCL Exam Paper (30-07-2021 Shift 2) In the circuit of figure, the switch is closed to position-1 for a long time. At t = 0 the switch position is changed from postion-1 to postion-2. Find an expression for the current i(t).

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)
In the RLC series circuit shown in figure, resonance occurs when the value of C is 20 µF. The supply voltages is v(t) = 20 sin (500t) V. Find the value of L.

MGVCL Exam Paper (30-07-2021 Shift 2)
Find the word which is correctly spelt from the given options.

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)
Match the following shown in figure

MGVCL Exam Paper (30-07-2021 Shift 2)
In the circuit of figure, the switch is closed to position-1 for a long time. At t = 0 the switch position is changed from postion-1 to postion-2. Find an expression for the current i(t).