The net torque developed by a single-phase induction motor at starting is - (a) Pulsating (b) Uniform (c) Zero (d) None of these

By Ritesh|Updated : October 31st, 2022

The net torque developed by a single-phase induction motor at starting is zero. We only have one winding for single-phase induction motors (main winding). As a result, the magnetic field pulses, increase to a maximum value before decreasing to zero and then increasing to a maximum in the negative cycle. Because it became zero twice in a cycle, the net torque generated is zero. As a result, the starting torque of a single-phase motor is zero. that a single-phase induction motor does not self-start.

Types of Torque

The two types of torque are static and dynamic. A torque that does not result in an angular acceleration is called static. Here are a few instances of static torque:

Static torque can be applied in a number of ways, like pushing a closed door while it is still in place and pedaling a bicycle at a constant speed when there is no acceleration.

Applications of Torque

  • Any item that is subject to torque has a pivot point. The following applications are offered:
  • Wrenches and Seesaws
  • Gyroscopes
  • When it swings, a pendulum or a parachute produces torque.
  • a bicycle-riding individual
  • Flying a flag atop a mast

Summary:

The net torque developed by a single-phase induction motor at starting is - (a) Pulsating (b) Uniform (c) Zero (d) None of these

A single-phase induction motor starts with zero net torque generated. For single-phase induction motors, there is just one winding available (main winding).

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