Question

A power station has an output of 33kiloohms at potential difference of 5Kv.A transformer of primary coil 2000 turns is used to step up voltage to 132Kv for transmission along a grid . Assuming no power losses . Calculate current in primary coil​

Answer 1

The current in the primary coil of the transformer is approximately 174.24 A.

To calculate the current in the primary coil of the transformer, we can use the formula:

Current (primary) = Power (secondary) / Voltage (primary)

The power in the secondary coil can be calculated using the formula:

Power (secondary) = Voltage (secondary) × Current (secondary)

Given that the power station has an output of 33 kiloohms and a potential difference of 5 kV, we can calculate the current in the secondary coil:

Current (secondary) = Power (station) / Voltage (station)

= 33,000 ohms / 5,000 V

= 6.6 A

Now, let's calculate the power in the secondary coil:

Power (secondary) = Voltage (secondary) × Current (secondary)

= 132,000 V × 6.6 A

= 871,200 W

Finally, we can calculate the current in the primary coil using the formula mentioned earlier:

Current (primary) = Power (secondary) / Voltage (primary)

= 871,200 W / 5,000 V

= 174.24 A

Therefore, the current in the primary coil of the transformer is approximately 174.24 A.