Power Systems Questions and Answers – Inductance of a Single-Phase Two-Wire Line – 1

This set of Power Systems Multiple Choice Questions & Answers (MCQs) focuses on “Inductance of a Single-Phase Two-Wire Line – 1”.

1. Effect of earth is considered insignificant while calculating the inductance of a single phase transmission line.
a) True
b) False
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2. Effect of earth’s presence on the magnetic field geometry is _________________
a) significant
b) insignificant
c) cannot be said
d) none of the mentioned
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3. The inductance of the transmission line is do not contain effect of earth electric field geometry while the capacitances contain.
a) True
b) False
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4. The end effect information is included in the inductance of a transmission line.
a) True
b) False
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5. The number of the strands included in the stranded cables while implementing a similar cable equivalent of single strand should be ________
a) 3x²-3x+1
b) 2x²-3x+1
c) 3x²-2x+1
d) 3x²-x+1
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6. The overall diameter of a stranded conductor if ‘x’ is the number of layers and each layer has a diameter ‘d’ will be
a) (2x-1)d
b) (3x-1)d
c) (6x-3)d
d) (2x+1)d
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7. _______ conductors are the latest trend of the extra high voltage lines.
a) Bundled
b) Parallel
c) ACSR
d) Bundled or ACSR
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8. A 10 MVA, 11 kV alternator has positive, negative and zero sequence reactance of 25%, 40%,10% respectively. The resistance that must be placed in the neutral such that zero sequence of fault current for a single phase to ground fault will not exceed the rated line current in ohms is
a) 2.66 Ω
b) 1.66 Ω
c) 12.1 Ω
d) 0.22 Ω
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Answer: a
Explanation:

Sanfoundry Global Education & Learning Series – Power Systems.

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