The GATE Grind

GATE Electrical Machines: Operating principle of single-phase induction motors – Previous Year Questions

4 GATE previous year questions on Operating principle of single-phase induction motors (Electrical Machines, Electrical Engineering) with answers and explanations, from every paper.

  1. GATE 2017 EE Q55 (2 marks, Numerical answer) – A 375 W, 230 V, 50 Hz, capacitor start single-phase induction motor has the following constants for the main and auxiliary windings (at starting): Z m…
  2. GATE 2018 EE Q64 (2 marks, Numerical answer) – The equivalent circuit of a single phase induction motor is shown in the figure, where the parameters are R 1=R 2'=X l1=X l2'=12\ , X M=240\ and s is…
  3. GATE 2022 EE Q24 (1 mark, Multiple choice) – The type of single-phase induction motor, expected to have the maximum power factor during steady state running condition, is
  4. GATE 2023 EE Q16 (1 mark, Multiple choice) – A 10-pole, 50 Hz, 240 V, single phase induction motor runs at 540 RPM while driving rated load. The frequency of induced rotor currents due to…