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

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

Oscillate

Socialy

seriuous

Abolishid

Oscillate

Socialy

seriuous

Abolishid

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a power network, 400 kV is recorded at a 415 kV bus. A 50 MVAR, 415 kV shunt reactor is connected to the bus. What is the reactive power absorbed by the shunt reactor?

56.45 MVAR

46.45 MVAR

66.45 MVAR

76.45 MVAR

56.45 MVAR

46.45 MVAR

66.45 MVAR

76.45 MVAR

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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), (ii) and (iii)

(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

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MGVCL Exam Paper (30-07-2021 Shift 2)
The expression for voltage regulation of a short transmission line for leading power factor is given by: ____, where, 'I' is the line current, 'V_r' is the receiving end voltage, 'R' is the line resitance and 'X' is the line reactance.

(IRcosφ_r + IXsinφ_r)/V_r

(IXcosφ_r - IRsinφ_r)/V_r

(IRcosφ_r - IXsinφ_r)/V_r

(IXcosφ_r + IRsinφ_r)/V_r

(IRcosφ_r + IXsinφ_r)/V_r

(IXcosφ_r - IRsinφ_r)/V_r

(IRcosφ_r - IXsinφ_r)/V_r

(IXcosφ_r + IRsinφ_r)/V_r

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MGVCL Exam Paper (30-07-2021 Shift 2)
A delta-connected balanced three-phase load is supplied from a three-phase, 400 V supply. The line current is 20 A and the power taken by the load is 10 kW. Find the power factor.

0.72

0.82

0.52

0.62

0.72

0.82

0.52

0.62

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MGVCL Exam Paper (30-07-2021 Shift 2)
A three-phase, 12 kV, 50 Hz and 300 kW load is operating at 0.8 pf lag. If the pf is to be improved to unity, using star connected capacitor, the per phase value of the reactive VAR required is:

50 kVAR

100 kVAR

25 kVAR

75 kVAR

50 kVAR

100 kVAR

25 kVAR

75 kVAR

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