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Electric Circuits

Electric Circuits
Types of rotating machines

 synchronous machine.
 transformer.
 both B and C.
 IM.

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Electric Circuits
A 3 wire, 3 - φ supply feeds a load consisting of three equal resistors. By how much is the load reduced if one of the resistors be removed when the load is in star?

 66.66 % of the original load.
 33.33 % of the original load.
 25 % of the original load.
 50 % of the original load.

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Electric Circuits
The plates of lead acid storage battery are most likely to be short circuited if

 the electrolyte evaporates.
 too much water is added.
 sediment collect at the bottom of the battery.
 the battery charged too slowly.

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Electric Circuits
Internal heating of a capacitor is usually attributed to

 electron movement.
 plate vibration.
 leakage resistance.
 dielectric charge.

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Electric Circuits
What is the value of charge of an electron?

 1.6022 × 10-27 Coulomb
 1.6022 × 10-7 Coulomb
 1.6022 × 10-8 Coulomb
 1.6022 × 10-19 Coulomb

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Electric Circuits
Bulb in street lighting are connected in

 end of end.
 series.
 parallel.
 series parallel.

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MORE MCQ ON Electric Circuits

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