The transformer ratio of a transformer is 5. If the primary voltage of the transformer is `400 V, 50 Hz` the secondary voltage will be

The transformer ratio of transformer is 10 : 1 . If the primary voltage is 440 V , secondary emf is

The efficiency of a transformer is 98%. The primary voltage and current are 200 V and 6A . If the secondary voltage is 100 V , the secondary current

The number of turns in the primary coil of a transformer are 100 and that in the secondary coil are 200. What type of transformer is it ? If the input voltage in the primary coil of the transformer is 200 V, find the output voltage in the secondary coil of the transformer.

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

The turns ratio of a transformer is 12.5. If its primary is connected with a.c. mains of 220 V, determine the voltage obtained across the secondary.

In an ideal transformer , the primary and the secondary voltages always have

The number of the turns in the primary coil of a transformer is 10 times than the same in the secondary coil . If the voltage across the primary is 20 V then find the voltage across the secondary .

A current of 2A is flowing at 220 V in the primary coil of a transformer. If current in the secondary coil is 1 A and efficiency of the transformer is 80% then the voltage produced in the secondary coil will be

The input voltage and output voltage in the primary and secondary coils of a transformer are 250 V and 5 V, respectively. If the number of turns in the primary coil of the transformer is 1000, find the number of turns in its secondary coil. Also mention, whether the transformer is a step-up one or a step-down one ?

The transformer ratio of transformer is 10 : 1 . The current in the primary circuit if the secondary current required is 100 A assuming the transformer be ideal, is