PYQ Vault
EbooksTutor

Transformer with given efficiency: current in a winding

This type of question, asked 2 times: 30 Jan 2024, 1 Feb 2024. All 2 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    30 Jan 2024

    111
    A power transmission line feeds input power at 2.3 kVkV to a step -down transformer with its primary winding having 3000 turns. The output power is delivered at 230 V230\text{ }V by the transformer. The current in the primary of the transformer is 5 A5\text{ }A and its efficiency is 90%90\%. The winding of transformer is made of copper. The output current of transformer is _____ A.

  2. Question 2

    1 Feb 2024

    108
    A transformer has an efficiency of 80%80\% and works at 10 V10\text{ }V and 4 kW4\text{ }kW. If the secondary voltage is 240 V240\text{ }V, then the current in the secondary coil is :

    Tap an option to check your answer.