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प्रश्न
State two factors on which the magnitude of induced e.m.f. depend.
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उत्तर
Magnitude of induced e.m.f depend upon:
(i) The change in the magnetic flux.
(ii) The time in which the magnetic flux changes.
संबंधित प्रश्न
A power transmission line feeds input power at 2200 V to a step-down transformer with its primary windings having 300 turns. Find the number of turns in the secondary to get the power output at 220 V.
How much current is drawn by the primary of a transformer connected to 220 V supply when it delivers power to a 110 V − 550 W refrigerator?
Which coil of a step up transformer is made thicker and why?
Name two factors on which the magnitude of an induced e.m.f. in the secondary coil depends.
Name three losses of energy in a transformer. How are they minimized?
Distinguish between Step up and Step Down Transformer.
Explain step up and step down transformer?
Efficiency of transformer is the ratio of ______.
The primary coil of a transformer has 60 turns whereas its secondary coil has 3000 turns.
If a 220 V ac voltage is applied to the primary coil, how much emf is induced in the secondary coil?
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):
