A transformer is designed to convert the voltage from 240 V a.c mains – McqOptions

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1.	A transformer is designed to convert the voltage from 240 V a.c mains to 12 V, and has 4000 turns on its primary coil. The turns on its secondary coil should be
A.	100
B.	200
C.	120
D.	480
Answer» C. 120

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