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प्रश्न
Transformer works on ______.
विकल्प
AC only
DC only
Both AC and DC
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उत्तर
Transformer works on AC only
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संबंधित प्रश्न
Draw a labeled diagram of a step-down transformer.
The primary coil of a transformed has 800 urns and the secondary coil has 8 turns. It is connected to a 220 V a.c. supply. What will be the output voltage?
State the mathematical relation between a number of turns in the primary coil to a secondary coil in the step-up transformer.
Describe the construction and working of a transformer with a neat labelled diagram.
Find out the phase relationship between voltage and current in a pure inductive circuit.
Assertion: A transfonner cannot work on D.C. supply.
Reason: D.C. changes neither in magnitude nor in direction.
A 60 W load is connected to the secondary of a transformer whose primary draws line voltage. If a current of 0.54 A flows in the load, what is the current in the primary coil? Comment on the type of transformer being used.
The primary coil having NP turns of an ideal transformer is supplied with an alternating voltage VP. Obtain an expression for the voltage VS induced in its secondary coil having NS turns.
A 12 V, 60 W lamp is connected to 220 V AC via an ideal transformer. Find the primary current.
