Question 474: AC fundamentals

Question

A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6 A, the voltage across the secondary coil and the current in the primary coil respectively are

Accepted Answer

Now P
p
= V
p
I
p
or I
p
= P
p
/V
p
= 3000/200 = 15 A
Also, V
s
= Ps
/I
s
= 2700/6 = 450 V

Answer

300 V, 15 A

Answer

450 V, 15 A

Answer

450 V, 13.5 A

Answer

600 V, 15 A

AC fundamentals

A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6 A, the voltage across the secondary coil and the current in the primary coil respectively are

Choose the correct answer: