In a residential type distribution system, the service is often through a single-phase incoming feeder
Select one:
True
False

True

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Which of these components is part of an industrial distribution system
Select one:

1. Circuit breakers
2. Transformers
3. DC supply system
4. Earthing system
5. All of the above

5

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The primary purpose of statutory electrical safety regulations is
Select one:

1. Safety of personnel
2. Increasing production
3. Ensure trouble-free operation of equipment

1

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Which of these is correct
Select one:

1. Generation normally occurs in MV level
2. Sub- transmission occurs at HV level or higher end of MV level
3. Distribution happens at MV level or LV
4. All of the above

4

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To ensure that the plant loads are not subjected to the voltage variations that happen in the external system, transformers are provided with on-load tap changers controlled by automatic regulation
Select one:
True
False

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The power flow and voltage drop analysis module forms part of software package involving utility distribution systems
Select one:
True
False

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Estimation of energy and power demand requires data such as
Select one:

1. List of connected loads and locations
2. Pattern of loading
3. Separation of critical loads from non-critical loads
4. Loads with unusual demand patterns
5. All the above

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In a reactor, the inductive drop reduces as the pf goes up with a phase angle shift
Select one:
True
False

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Which of these statements regarding impedance is incorrect?
Select one:

1. It is the effective value of resistance and reactance of a system
2. For zero impedance in a particular system, the fault current would be infinity
3. If impedance is very high, the fault current would be negligible
4. None of the above

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Base impedance is given by
Select one:

1. base MVA / base (kV)2
2. (kV)2 / MVA
3. kV / (MVA)2

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