Power Systems Questions and Answers – Electric Field and Potential of a Long …

This set of Power Systems Multiple Choice Questions & Answers (MCQs) focuses on “Electric Field and Potential of a Long Straight Conductor – 2”.

1. If we account for the effect of the presence of the capacitance of the transmission line, then the capacitance ___________
a) increases
b) decreases
c) remains same
d) increases hyperbolically
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2. While estimating the line parameters, the term self GMD is used for the calculation of ______________
a) inductance
b) capacitance
c) conductance
d) inductance, capacitance and conductance
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3. The ground effect causes line capacitance to _____________
a) Increase by 0.2%
b) Increase by 2%
c) Decrease by 0.2%
d) Decrease by 2%
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4. If the spacing between the phase conductors is increased, the line capacitance will _______________
a) decrease
b) increase
c) remain same
d) depends on the conductor
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Answer: a
Explanation:

5. If the length of the transmission line is increased, the line charging current in the TL will _____________
a) increase
b) decrease
c) remain same
d) not be affected
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6. On applying the alternating sine wave as the input to the line, the line capacitance draws _____________
a) leading sinusoidal current
b) lagging sinusoidal current
c) current in phase with voltage
d) depends on the receiving end load
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7. The capacitance becomes significant for the __________
a) long transmission line
b) medium transmission line
c) short transmission line
d) cannot be determined
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8. The method of the images is applied to find the __________________
a) calculation of capacitance
b) calculation of inductance
c) calculation of resistance
d) calculation of effect of the earth on capacitance
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Sanfoundry Global Education & Learning Series – Power Systems.

To practice all areas of Power Systems, here is complete set of 1000+ Multiple Choice Questions and Answers.