Given the input current 15 A and input voltage of 100 V for a step up transformer having 90% efficiency. Find the output power and voltage in the secondary if output current is 3 A.

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 power tansmission line feeds input input power at 2200 V to a step down transformer with its primary windings having 3000 turns. Find the number of turns in secondary to get the power output at 220 V.

In a step - down transformer having primary to secondary turn ratio 20:1 the input voltage applied is 250V and output current is 8A Assuming 100% efficiency calculate the (a) voltage across secondary coil (b) current in primary coil (c) power output .

Transformer is a device used to increase or decrease the voltage in the transmission line according to requirement, Generally the input line voltage is fed in a primary coil and the output line voltage is obtained from the terminals of another coil In an ideal transformer, the primary and secondary coils are linked is such a way that there is no loss of magnetic flux and electrical energy. In an ideal transformer, if the number of turns and input voltage across the terminals of the primary coils be N_1 and V_1 , then the output voltage at the two terminals of the secondary coil V_2=V_1.N_2/N_1 , where N_2 is the number of turns in the secondary coil . The ratio of number of turns of the primary and secondary coils of an ideal transformer is 2:1 IF the input voltage is 440 V, then output voltage is if the input power of the transformer be 44 W, then output power is In the above mentioned transformer the input and output currents are respectively.

A power transmission line feeds input power at 2300 V a step down transformer with its primary windings having 4000 turns. The output power is delivered at 230 V by the transformer. If the current in the primary of the transformer is 5A and its efficiency is 90% , the output current would be :

A power transmission line feeds input power at 2300 V a step down transformer with its primary windings having 4000 turns. The output power is delivered at 230 V by the transformer. If the current in the primary of the transformer is 5A and its efficiency is 90% , the output current would be :

A power transmission line feeds input power at 2300 V a step down transformer with its primary windings having 4000 turns. The output power is delivered at 230 V by the transformer. If the current in the primary of the transformer is 5A and its efficiency is 90% , the output current would be :

In a step-down transformer having primary to secondary turn ratio 10:1, the input voltage applied is 250V and outout current is 10 A. Assuming 100% efficiency, calculate the (i) voltage across secondary coil (ii) current in primary coil (iii) power output