53) What is the effect on 3 phase induction motor if one phase is cut-off during running with load?

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

Answer is:

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

Answer is:

Wrong motor connection

Wrong starter connection

Open circuit in rotor winding

Partially shorted stator winding

Answer is:

Short circuit

Open circuit

Over current

Under voltage

Answer is:

Rotor speed reduces

Rotor speed increases

Rotor speed remains same

Rotor bars get damaged

Answer is: