Answer / moti rgpv

1-:STAR -DELTA STARTOR
2-:COUPLING WITH INDUCTION MOTOR AND REMOVE THE MOTOR
AFTER GETING 80% TO 90% OF SYNCHRONOUS SPEED
3-:USING DAMPER BARS

Answer / mallikarjun

At first , the synchronous motor is coupled with induction
motor then the synchronous motor will run as a induction
motor and then the d.c supply is given to the field winding
of the synchronous motor ,the rotor will tends to magentic
locking with stator rotating field then that synchronous
motor wii run at synchronous speed

Answer / satya

using pony motors
using damper windings

Answer / kesavulu

Generally Synchronous motors are not self starting motors.
A pony motor is required to rotate and D.C extitation is
also required.Liquified rotary starters are used

Answer / thiru

BUT IN THE OPTIONS THESE ARE NOT THERE
OPTIONS.
1)DOL 2)AUTO T/F
3)ANY ONE 4)NO ANS

Answer / moti rgpv

DOL is also correct BUT IT IS NOT WIDELY USE FOR LARGE
RATING FOR SYN. MOTOR.
SO IN OPCTION DOL IS WRITE

Answer / viswanadh.m

auto synchronous starter

Answer / guest

3 point stater

Answer / ed

Across the line Starter.
with time delay relay or current sensing relay or
speed monitor relay to
energize the field when the motor is close to
synchronous speed

For above 600 volt motors, a Circuit Breaker can be
used instead of a starter.

Answer / ravi

VFD STARTERS.

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