When a voltage of 120 V is impressed across the primary of a transformer, the current in the primary is 1.85 mA. Find the voltage across the secondary, when it delivers 150 mA. The transformer has an efficiency of 95 %.

When a voltage of 120V is impressed across the primary of a transformer , the current in the primary is 1.85mA . Find the voltage across the secondary , when it delivers 150mA . The transformer has an efficiency of 95%

(a) When the primary of a transformer is connected to a 120 V AC mains the current in the primary is 18.5 mA. Find the voltage across the secondary when it delivers 1.5 mA current through it, assuming the transformer to be an ideal one. State any one type of energy loss in a transformer. (b) A rectangular coil of sides .I. and .b. carrying a current lis subjected to a uniform magnetic field vecB acting perpendicular to its plane. Obtain the expression for the torque acting on it.

A battery of 12 V is connected to primary of a transformer with turns n_(s) // n_(P) = 10 . Voltage across secondary would be

In a transformer the transformation ratio is 0.3. If 220 V ac is fed to the primary, then the voltage across the secondary is

In a transformer the transformation ratio is 0.3. If 220 V ac is fed to the primary, then the voltage across the secondary is

The current in the secondary coil of a transformer is 1A and that in the primary is 0.5 A. If 200 V is available in the secondary coil of the transformer, what is the voltage in the primary ?

A transformer of efficiency 90% has turns ratio 1 : 10. If the voltage across the primary is 220 V and current in the primary is 0.5 A, then the current in secondary is

A transformer of efficiency 90% has turns ratio 10 : 1. If the voltage across the primary is 220 V and current in the primary is 0.5 A, then the current in secondary is