A step up transformer is used to

A step - up transformer is used on 120 V line to provide a potential difference of 2400 V . If the number of turns in the primary is 75, then the number of turns in the secondary shall be

A step down transformer is used to reduce the main supply of 200 V to 11 V. If the primary draws a current of 5 A and the secondary 90 A, what is the efficiency of the transformer ?

A step up transformer is connected on the primary side to a rechargable battery which can deliver a large current. If a bulb is connected in the secondary, then

The transformation ratio in the step -up transformer is

An ideal transformer is used to step up an alternating emf of 220V to 4.4kV to transmit 6.6kW of power The current rating of the secondary is

A step up transformer has turn ratio 10:1 . A cell of e.m.f 2 volts is fed to the primary . Secondary voltage developed is :

A power transformer is used to step up an alternating emf of 200V to 4 KV and to transmits 5KW power. If the primary is of 1000 turns, calculate, assuming the transformer to be ideal. (i) The number of turns in the secondary (ii) The current rating of the secondary

A power transformer is used to step up an alternating e.m.f. of 220 V to 11kv to trannsmit 4.4 kW of power. If the primary coil has 1000 turns, what is the current rating of the secondary?(Assume 100% efficiency for the transformer)