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1 . The raw power sent from the utility company is




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2 . The power used by equipment for useful work is




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3 . The power used by magnetizing circuits of some equipment is




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4 . The offset of current from voltage is




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5 . Select the odd




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6 . 3-phase AC lines do not use only 3 conductors.




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7 . It is easier to build circuit breakers for AC systems than DC systems




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8 .

The transforming in AC substation is much easier than ???????????? in DC system






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9 .

HVDC is less reliable and has lower availability due to






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10 .

In single phase AC circuits Active Power, P =






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11 .

In single phase AC circuits Reactive Power, Q =






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12 . In some cases, the receiving end voltage can be found to be higher than the sending end voltage according to ?????????????????????? effect.




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13 .

A high power factor reduces the current flowing in a supply system.






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14 . Power factor will be improved if the phase angle between current and voltage is




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15 . Skin effect reduces the effective ????????? of a conductor




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16 . Which is more affected by skin effect?




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17 . Corona effect is due to dielectric stress on




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18 .

In 3-phase AC circuits using line values, Active Power, P =






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19 .

In 3-phase AC circuits using phase values, Active Power, P =






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20 . The ratio of resistance to impedance is




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