starting torque is increased and current is decreased by
using external resistance in a slip ring induction motor.
How??
Answer Posted / nilkanth tailor
THEIR R BASICALLY TWO TYPES OF INDUCTION MOTOR
1) SLIP RING I.M.
2) SQUIRREL CAGE I.M.
GENERALLY, IN HIGH STRATING TORQUES MOTOR(DC SERIES
MOTOR) HAS HIGH STARTING CURRENT, AND ITS VERY DIFFICULT TO
CONTROL THAT CURRENT...BUT IN SLIP RING I.M THIER IS HIGH
TORQUES PRODUCE WITH LOWER STARTING CURRENT THAT IS MAIN
ADVATAGE...
THE MAIN DIFF BET. SLIP AND SQUIRREL CAGE I.M. IS THAT
1)The rotor of the slip ring motor has more windings than a
squirrel-cage rotor so that induction voltage is higher and
the current for the same field strength lower.
2)During start-up the a typical rotor has 3 poles connected
to the slip ring. Each pole is wired in series with a
variable power resistor.
3)During start-up the resistors reduce the field strength
in the stator. As a result the inrush current is reduced.
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
1.what is mean by 8/20 micro sec waveshape
What is the general system requirement of alternator?
How can two 3 phase transformers of same KVA and Voltage be connected in parallel?
Define rise time.
what will happen if frequency is below 50 hz?
Thermal withstand capability under full short circuit conditions, in terms of number of times of occurrence of short circuit and corresponding anticipated percentage reduction in transformer life.
how ups works ? various parts of ups and working principle
What is core CT & it's function?
SUTIABLE FOR ohm's law super conductor
how to find impedance , mutual indatnce in transmission lines
What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.
Why i receive the GCU fault in my DG Sychronization panel . what all the factors considered for this fault .
What will be in Mahagenco Trade Test Exam? I want to know the same.
please give me solution to rectify the emi(electromagnetic interference)
condition Autotrip facia come on control panel of electrical transmission line?