JEE Main & Advanced
Physics
Electro Magnetic Induction
Question Bank
Application of EMI (Motor, Dynamo, Transformer)
question_answer
The ratio of secondary to primary turns is \[9:4.\] If power input is P, what will be the ratio of power output (neglect all losses) to power input [DCE 1999]
A) 4 : 9
B) 9 : 4
C) 5 : 4
D) 1 : 1
Correct Answer:
D
Solution :
Since all the losses are neglected. So \[{{P}_{out}}={{P}_{in}}\]