Single Choice

A transformer is used to

Aconvert DC into AC
Bconvert AC into DC
Cobtain the required DC voltage
Dobtain the required AC voltage
Correct Answer

Solution

A transformer is used to change the voltage low to high or vice versa depending upon the efficiency for power transfer and usage and since it is an application of the changing emf due to change in magnetic flux which is created by changing current it can be only applied to a.c. .

SIMILAR QUESTIONS

Alternating Current

A transformer is a device which converts:

Alternating Current

A step-up transformer has transformation ratio of $$3:2$$. What is the voltage in secondary, if voltage in primary is $$30V$$?

Alternating Current

Complete the following sentences: (i) In a step-up transformer, the number of turns in the primary are ......... than the number of turns in the secondary. (ii) The transformer is used in .............. current circuits. (iii) ............. energy is converting into .............. energy by an electric generator.

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