Learn

Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 28 July 2022, Shift 2, Physics Q14

Question 14 of 90 in this shift, Physics question 14 of 30, Section A.

A transformer operating at primary voltage 8 kV and secondary voltage 160 V serves a load of 80 kW. Assuming the transformer to be ideal with purely resistive load and working on unity power factor, the loads in the primary and secondary circuit would be
  1. (1)800 Ω800\ \Omega and 1.06 Ω1.06\ \Omega
  2. (2)10 Ω10\ \Omega and 500 Ω500\ \Omega
  3. (3)800 Ω800\ \Omega and 0.32 Ω0.32\ \OmegaOfficial answer
  4. (4)1.06 Ω1.06\ \Omega and 500 Ω500\ \Omega

Official answer

Option 3

NTA final key.

Chapter
Alternating Current
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.