Question

which device is used to step up or step down AC power?
a) Resistivity
b) Melting point
c) Transformer
d) DC generator

Answer 1

C. Transformer
It is used to step up or step down ac power.

Answer 2

Hey man ! I think the answer is transformer because Power transmission Electric power is transmitted over long distances at high voltage.So, step-up transformers are used at power stations to increase the voltage of power whereas a series of step-down transformers are used to decrease the voltage up to 220 V......



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