An a.c. voltage of 200 V is applied to the primary of a transformer and voltage of 2000 V is obtained from the secondary . Calculate the ratio of currents through primary and secondary coils.

In a transformer, the number of turns in primary coil and secondary coil are 5 and 4 respectively. If 240 V is applied on the primary coil, then the ratio of current in primary and secondary coil is

A transformer has an efficiency of 80%. It works at 4 kW, 100 V. If the secondary voltage is 240 V, Calculate the primary and secondary currents.

In a step up transformer, the input voltage is 300 V and the output voltage is 15 KV. Then the ratio of the number of turns in the primary to that in the secondary is

In a stepup transformer, the ratio of number of turns in primary and secondary coils is 1 : 10 . What voltage will develop in the secondary if the primary is connected to 220 V mains ? If the current drawn from the secondary is 2A, calculate the current through the primary

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.

A generator supplies 100 V to the primary - coil of a transformer of 50 turns.If the secondary coil has 500 turns, then the secondary voltage is

200 V AC is applied to primary coil of a transformer and it is found that output current is 8 A and output voltage is 50 V. Assume no energy loss. Find the current in primary coil I ampere.

A current of 5A is flowing at 220V in the primary coil of a transformer. If the voltage produced in the secondary coil is 2200V and 50% of power is lost, then the current in the secondary coil will be –

A transformer has 1500 turns in the primary coil and 1125 turns in the secondary coil. If a voltage of 200V is applied across the primary coil , then the voltage in the secondary coil is :