Physics · JEE

Important Questions: AC generator and transformer for JEE

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The most important AC generator and transformer questions for JEE cover conceptual traps, standard results, and numerical patterns from AC generator and transformer. Goodmarks provides 4+ high-yield MCQs with full solutions.

Focus on what matters most. These important AC generator and transformer questions cover high-weightage concepts from AC generator and transformer — the topics JEE repeats every year.

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Q1PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

Which of the following statement regarding transformer is incorrect?

Q2PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

A power transmission line feeds input power

t 2300 \mathrm{V}

to a step-down transformer with its primary windings having 4000 turns. The output power is delivered at

230 \mathrm{V}

by the transformer. If the current in the primary of the transformer is

5 \mathrm{A}

and its efficiency is

90 \%,

the output current would be :

Q3PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

Which one of the following statements is true?

Q4PhysicsUnit 14: Electromagnetic Induction and Alternating Currents

A step up transformer is used to:

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Frequently asked questions

What makes a AC generator and transformer question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Electromagnetic Induction and Alternating Currents are high-weightage?

Key areas include AC generator and transformer. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.