For a transformer, the turns ratio is 3 and its efficiency is 0.75 . The current flowing in the primary coil is 2 A and the voltage applied to it is 100 V. Then the voltage and the current flowing in…

Question

For a transformer, the turns ratio is 3 and its efficiency is 0.75 . The current flowing in the primary coil is 2 A and the voltage applied to it is 100 V. Then the voltage and the current flowing in the secondary coil are respectively.

Accepted Answer

Correct answer: B. (b) Here, N_3N_p=3 , =0.75 ,I_p=2 A ,V_p=100 V For a transformer N_sN_p= V_sV_p ∴ V_s= N_sN_pV_p=3 100 V=300 V Efficiency of a transformer, = Output power Input power= V_sI_sV_pI_p 0.75= (300 V ) (I_s ) (100 V ) (2 A ) I_s= 1.53 A=0.5 A

$For a transformer, the turns ratio is 3 and its efficiency is 0.75 . The current flowing in the primary coil is 2 A and the voltage applied to it is 100 V . Then the voltage and the current flowing in the secondary coil are respectively.$

Solution

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