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MGVCL Exam Paper (30-07-2021 Shift 1)

MGVCL Exam Paper (30-07-2021 Shift 1)
Calculate the capacitance per meter of a 50 Ω load cable that has an inductance of 50 nH/m.

40 pF
10 pF
20 pF
30 pF

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Z = √(L/C)
C = L/Z²
C = 50*10⁻⁹/(50*50)
C = 0.02 nF
C = 20 pF

MGVCL Exam Paper (30-07-2021 Shift 1)
Dena Bank and Vijaya Bank recenlty got merged with which of the following banks?

Punjab National Bank
Bank of Baroda
State Bank of India
Indian Overseas Bank

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MGVCL Exam Paper (30-07-2021 Shift 1)
An alternator is supplying load of 300 kW at a power factor of 0.5 lagging. If the power factor is raised to unity, how many more kilowatts can alternator supply for the same kVA loading?

300 kW
600 kW
150 kW
450 kW

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

P = S*cosφ
S = P/cosφ
S = 300/0.5
S = 600 kVA
For same kVA rating and unity power factor,
P = 600*1
P = 600 kW
Pextra = 600 - 300
Pextra = 300 kW

MGVCL Exam Paper (30-07-2021 Shift 1)
By inserting a plate of dielectric material between the plates of a parallel plate capacitor at constant potential, the energy stored in the capacitor is increased five times. The dielectric constant of the material is

25
5
1/25
1/5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Energy stored by capacitor, Q = ½CV²
Dielectric constant is directly proportional to C and capacitance is proportional to the dielectrical constant

MGVCL Exam Paper (30-07-2021 Shift 1)
What are the states of the three ideal diodes of the circuit shown in figure ?

D1 ON, D2 OFF, D3 ON
D1 OFF, D2 ON, D3 OFF
D1 OFF, D2 ON, D3 ON
D1 ON, D2 OFF, D3 OFF

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

For the given circuit shown in figure,
D1 is forward bias mode - On state
D2 is in reverse bias mode - off state
D3 is in reverse bias mode - off state.

MGVCL Exam Paper (30-07-2021 Shift 1)
In 2019, India stands ___ position in the consumption of electricity in the world.

First
Second
Third
Fourth

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

As per the key statistics data of IEA With electricity consumption reached to 1,164 TWh in the country till November 2019, India ranked third among the top ten electricity consuming countries across the globe.

MORE MCQ ON MGVCL Exam Paper (30-07-2021 Shift 1)

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