railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Transformer Auto Transformer

A 100 VA, 120/12 V transformer is to be connected so as to form a step-up auto transformer. A Primary voltage of 120 V is applied to the transformer. What is the secondary voltage of the transformer?

1

1.2 V

2

12 V

3

120 V

4

132 V

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