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Question
State the factors on which the frequency of the alternating e.m.f. depends.
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Solution
The frequency of the alternating e.m.f. depends on the frequency of rotation of the coil.
RELATED QUESTIONS
Draw a labeled diagram of a step-down transformer.
The primary coil of an ideal step-up transformer has 100 turns and the transformation ratio is also 100. The input voltage and power are 220 V and 1100 W, respectively. Calculate the
(a) number of turns in secondary
(b) current in the primary
(c) a voltage across secondary
(d) current in secondary
(e) power in secondary
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In an ideal transformer, the turns ratio is `N_p/N_s = 1/2`. The ratio Vs : Vp is equal to (the symbols carry their usual meaning):
