Power System - I (3140914) MCQs
MCQs of Electrical Supply Systems
| 1. |
The most economic load on an overhead line is
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Answer:
Option (a) |
| 2. |
The most economic load on an underground cable is
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Answer:
Option (b) |
| 3. |
For the stable operation of interconnected system, the passive element that can be used a interconnecting element is
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Answer:
Option (a) |
| 4. |
The voltage and current in a circuit are given by
v = 10 sin (ωt – π/6) i = 10 sin (ωt + π/6) The power consumed is given as
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Answer:
Option (d) |
| 5. |
The main consideration for higher and higher operating voltage of transmission is to
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Answer:
Option (c) |
| 6. |
In a circuit the voltage and current are given by v = (10 + j5) and i = (6 + j4). The circuit is
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Answer:
Option (b) |
| 7. |
In a circuit the voltage and current are given by v = (10 + j5) and i = (6 + j4). Power of the circuit is
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Answer:
Option (c) |
| 8. |
In a circuit the voltage and current are given by v = (10 + j5) and i = (6 + j4). Reactive power of the circuit is
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Answer:
Option (d) |
| 9. |
For a given power delivered, if the working voltage of a distributor line is increased to n times, the cross-sectional area A of the distributor line, would be reduced to
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Answer:
Option (b) |
| 10. |
A single-phase transmission line of impedance j 0.8 Ω supplies a resistive load of 500 A at 300 V. The sending-end power factor is
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Answer:
Option (d) |
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