Single Choice

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

A$$45V$$
Correct Answer
B$$15V$$
C$$90V$$
D$$300V$$

Solution

Transformation ratio, $$k=\cfrac { { N }_{ s } }{ { N }_{ p } } $$

Since, $$\cfrac { { V }_{ S } }{ { V }_{ P } } =\cfrac { { N }_{ S } }{ { N

}_{ P } } \quad \quad$$

$$ \implies V_s= \cfrac { { N }_{ S } }{ { N }_{ P

} } \times { V }_{ P }$$

$$\implies { V }_{ S }=\cfrac { 3 }{ 2 } \times 30=45V$$

SIMILAR QUESTIONS

Alternating Current

A transformer is a device which converts:

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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