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प्रश्न
State whether true or false. If false, correct the statement.
A transformer can step up direct current.
विकल्प
True
False
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उत्तर
False
Correct Statement: A transformer can step up alternating current.
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संबंधित प्रश्न
Derive an expression for e.m.f. and current in terms of turns ratio
How is the e.m.f. across primary and secondary coils of a transformer related with the number of turns of the coil in them?
How are the e.m.f in the primary and secondary coils of a transformer related with the number of turns in these coils?
The primary coil of a transformer has 200 turns while the secondary coil has 1000 turns. What type of transformer is this? if the input voltage is 10V, what will be the output voltage?
Applying e.m. f to primary coil is 210 V. If the number of turns in primary coil is 200 turns and that of in secondary coil is 20 turns, then find out the output voltage. Name the type of transformer.
Mention two main sources of power loss in real transformers.
Derive the equation for a transformer.
Explain why core of a transformer is always laminated.
How do the input and output powers in a transformer compare? State the assumption made.
