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The transformation ratio in the step -up...

The transformation ratio in the step -up transformer is

A

one

B

greater than one

C

less than one

D

the ratio greater or less than one depends on the other factor

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The correct Answer is:
B
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Assertion : Step-down transformer can also be used as step-up transformer. Reason: Ratio of voltage across primary and secondary coils is the same as ratio of respective number of turns.

In a full wave junction diode rectifier, the input a.c. has an rms value of 10V . The transformer used is a step up transformer having transformation ratio 1:2 . Calculate the d.c. and a.c. voltages in the rectified output.

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