MGVCL Exam Paper (30-07-2021 Shift 3)
The most commonly used method for the protection of three phase feeder is

Differential protection
Time graded protection
None of these
Reverse power protection

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MGVCL Exam Paper (30-07-2021 Shift 3)
Consider a solar PV plant with the following specific conditions:
Analysis period: 1 year
Measured average solar irradiation intensity in 1 year: 150 kWh/m²
Generator area of the PV plant: 10 m² Efficiency factor of the PV modules: 15%
Electrical energy actually exported by plant to grid: 135 kWh
Calculate the performance ratio.

75%
60%
80%
50%

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MGVCL Exam Paper (30-07-2021 Shift 3)
Continuous and rapid variations in the load current magnitude which causes voltage variations is known as

Flicker
Voltage sag
Voltage distortion
Harmonics

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MGVCL Exam Paper (30-07-2021 Shift 3)
What are the main challenges that the electric grid faces?

Global rise in temperature
Increase in Energy Demand
Reliability and Power Quality is Declining
All of these

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