In a step-down transformer the turn ratio is `1:2` and output power is `2.2kW`. If output current is `10A` then the values of input voltage and input current.
A transformer consisiting of 300 turns in the primary and 150 turns in the secondary gives output power of 2.2 kw. If the current in the secondary coil is 10 A, then the input voltage and current in the primary coil are:
For an ideal transformer ratio of output ot the input power is always
In a step - down transformer the input voltage is 22kV and the output voltage is 550V The ratio of the number of turns in the secondary to that in the primary is .
In an ideal step down transformer, the input voltage is 400V and the output voltage is 20 V. The output voltage is used to operate a device, having an impendance of 100 ohms. What is the current in the primary circuit?
In a step-down transformer input voltage is 200 volts and output voltage 5 volt. The ratio of nubmer of turns in it will 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
In a step up transformer, if ratio of turns of primary to secondary is 1:10 and primary voltage si 230 V . If the load current is 2A . Then the current in primary is
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 .
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
