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The CT supplies current to the current coil of a power factor meter, energy meter and, an ammeter. These are connected as?

(a) All coils in parallel

(b) All coils in series

(c) Series-parallel connection with two in each arm

(d) Series-parallel connection with one in each arm

This question was posed to me in exam.

I'm obligated to ask this question of Concept of Convolution topic in section Signal Transmission Through Linear Systems of Signals and Systems

1 Answer

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by (42.1k points)
Correct answer is (b) All coils in series

For explanation I would say: Since the CT supplies the current to the current coil, therefore the coils are connected in series so that the current remains the same. If they were connected in parallel then the voltages would have been same but the currents would not be the same and thus efficiency would decrease.

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