A transformer having efficiency of 90% is working on 200 V and 3kW power supply

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

Options

(a) 300 V, 15 A
(b) 450 V, 15 A
(c) 450 V, 13.5 A
(d) 600 V, 15 A

Correct Answer:

450 V, 15 A

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. A boat which has a speed of 5 kmh⁻¹ in still water crosses river of width 1 km long
  2. Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units
  3. Three capacitors of capacitances 3 μF, 10 μF and 15 μF are connected in series
  4. In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected
  5. A straight conductor 0.1 m long moves in a uniform magnetic field 0.1 T.