uring short circuit test why iron losses are negligible? A) The current on secondary side is negligible B) The voltage on secondary side does not vary C) The voltage applied on primary side is low  *The current on secondary side is negligibleThe voltage on secondary side does not varyThe voltage applied on primary side is lownon of the above

The iron losses are negligible during the short circuit test because the voltage applied on the primary side is low.

Here's a step-by-step explanation:

1. In a short circuit test, the secondary winding of the transformer is short-circuited, and a voltage is applied to the primary winding.

2. This applied voltage is very low compared to the transformer's rated voltage.

3. Iron losses in a transformer (also known as core losses) are caused by the magnetizing and demagnetizing of the core, which happens when voltage is applied.

4. Since the applied voltage is low during a short circuit test, the core doesn't get magnetized and demagnetized to a large extent.

5. Therefore, the iron losses are negligible during a short circuit test.

The current on the secondary side being negligible or the voltage on the secondary side not varying are not the reasons for negligible iron losses during a short circuit test.

The iron losses are negligible during the short circuit test because the voltage applied on the primary side is low.

Here's a step-by-step explanation:

1. In a short circuit test, the secondary winding of the transformer is short-circuited, and a voltage is applied to the primary winding.

2. This applied voltage is very low compared to the transformer's rated voltage.

3. Iron losses in a transformer (also known as core losses) are caused by the magnetizing and demagnetizing of the core, which is related to the voltage.

4. Since the applied voltage is low during the short circuit test, the iron losses are also low and can be considered negligible.

So, the correct answer is C) The voltage applied on primary side is low.