The primary of a transformer has 200 turns and secondary has 1000 turns. The power output from secondary at 1000 V is 9 kW. Calculate primary voltage and heat loss in primary. Take resistance of primary coil `0.2 Omega` and efficiency of transformer = 90%.

(i) The primary of a transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at 1100 V is 12.1 kW, calculate the primary voltage. (ii) If the resistance of the primary is 0.2 Omega and that of the secondary is 2.0 Omega and the efficiency of the transformer is 90 % , calculate the heat losses in the primary and the secondary coils.

The primary coil of an ideal transformer has 100 turns and the secondary coil has 600 turns. Then

A transformer has 300 primary turns and 2400 secondary turns: If the primary supply voltage is 230 V, what is the secondary voltage ?

The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an ac supply of 20V,50Hz . The secondary will have an output of

In a transformer the primary has 500 turns and secondary has 50 turns . 100 volts are applied to the primary coil, the voltage developed in the secondary will b

The efficiency of a transformer is 90%. The transformer is rated for output of 9000 W. If the primary voltage is 1000 V and resistance of primary is one ohm then the copper losses in the primary coil will be

A transformer has 500 turns in the primary and 1000 turns in its secondary. The primary voltage is 200 V and load in secondary is 100 ohm. Calculate the current in primary assuming it to ideal transformer.

The primary winding of a transformer has 100 turns and its secondary winding has 200V turns. The primary is connected to an ac supply of 120V and the current flowing in it is 10A . The voltage and the current in the secondary are