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

MGVCL Exam Paper (30-07-2021 Shift 1)
Which generation of computers used vacuum tubes?

First Generation

Third Generation

Second Generation

Fourth Generation

First Generation

Third Generation

Second Generation

Fourth Generation

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MGVCL Exam Paper (30-07-2021 Shift 1)
A given solar cell has the following specifications:
Open-circuit voltage, Voc: 0.7 V
Short-circuit current, Isc: 3.5 A
Short-circuit current, Isc: 3.5 A
Short-circuit current, Isc: 3.5 A
If the solar cell operates at maximum power point, calculate the efficiency.

14.70%

12.70%

13.70%

15.70%

14.70%

12.70%

13.70%

15.70%

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MGVCL Exam Paper (30-07-2021 Shift 1)
___ is the rms value of the total current comprising the AC and DC components of the current in the circuit breaker pole at the instant of contact separation.

Asymmetrical breaking current

Making current

Symmetrical short circuit current

Symmetrical breaking current

Asymmetrical breaking current

Making current

Symmetrical short circuit current

Symmetrical breaking current

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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 OFF

D1 OFF, D2 ON, D3 OFF

D1 ON, D2 OFF, D3 ON

D1 OFF, D2 ON, D3 ON

D1 ON, D2 OFF, D3 OFF

D1 OFF, D2 ON, D3 OFF

D1 ON, D2 OFF, D3 ON

D1 OFF, D2 ON, D3 ON

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MGVCL Exam Paper (30-07-2021 Shift 1)
The frequency of the emf in the stator of a 4-pole induction motor is 50 Hz, and that in the rotor is 2 Hz. What is the slip and at what speed is the motor running?

4%, 1440 rpm

3%, 1440 rpm

3%, 1455 rpm

4%, 1455 rpm

4%, 1440 rpm

3%, 1440 rpm

3%, 1455 rpm

4%, 1455 rpm

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MGVCL Exam Paper (30-07-2021 Shift 1)
Stability of power system can be improved by
1. Reducing voltage of transmission
2. Using parallel transmission lines
3. Using series compensators
Which of the above statements are correct?

2 and 3 only

All 1, 2 and 3

1 and 2 only

1 and 3 only

2 and 3 only

All 1, 2 and 3

1 and 2 only

1 and 3 only

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