1.

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

Answer»

45 V
15 V
90 V
300 V

Solution :`epsilon_1=30V, epsilon_2`= ?
Transformation RATIO `r=N_2/N_1=3/2`
`therefore epsilon_2/epsilon_1=N_2/N_1`
`therefore epsilon_2/30=3/2`
`therefore epsilon_2`=45 V


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