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NEET UG PHYSICS MCQ: ALTERNATING CURRENT
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Which type of losses donot occur in the transformer?
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Correct option: C
Mechanical losses
Option C (Mechanical losses) is correct because transformers are static devices and do not have moving parts, thus they do not experience mechanical losses.
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Reason (R) : , whereas and can be greater than also. When power is drawn from the secondary coil of the transformer, the dynamic resistance An alternating e.m.f. is applied to purely capacitive circuit. The phase relation between e.m.f. and current flowing in the circuit is or
In a circuit containing capacitance only
Average power in the L-C-R circuit depends upon A generator produces a voltage that is given by , where t is in seconds. The frequency and r.m.s. voltage are In a choke coil, the resistance and resistance are such that