To get high running torque

To get high starting torque

To reduce the load current

To get increased speed at starting

Will not run

Runs at slow speed

Runs at very high speed

Runs but not able to pull load

Motor runs normally

Motor stop instantaneously

Motor runs slowly, finally it burns

Motor runs with irregular speed

Motor stops at once

Motor will run normally

Motor runs with humming noise with slow speed

Motor will run slow speed but winding will be burnt out shortly

Improper phase sequence

Fluctuations in line voltage

Loose contact in supply lines

Wrong terminal connections at motor