Why do series motors have high starting torque?

Answer Posted / glenn saldanha savio

SINCE BOTH FIELD AND ARMATURE ARE CONNECTED IN SERIES THE
TORQUE EQUATION IS T=KI2. (TORQUE PROPORTIONAL TO SQUARE OF
CURRENT).
ALSO NOTE THAT FROM THE CHARACTERISTIC IT IS THAT AS SPEED
INCREASES THE TORQUE DECREASES AND VICE VERSA.
THEREFORE THE TORQUE IS HIGH ONLY AT LOW SPEED.

Is This Answer Correct ?    18 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what would u consider to be the basic purchase order information you would need to proceed with a cable inspection assignment?

1473


what is the use of the puls transformer in UPS & how it works???????????

1668


What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.

1238


What are the various kind of cables used for transmission?

639


what are the specifications we must look at to select a relay for any capacity motor?

1572






What is gross error?

694


What are the protection required for Transformer, motor, Line, Generator, capacitor, that all i have to refer which standard?(Like Transformer detail IS 2026)

1474


if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.

1512


When we giving the 3 phase supply to ups system how to coming netural?

1648


what is PWM in IGBT and how it works for drive.?

1239


how to calculate the change over time for star delta starter for different KW motor?

3754


why high speed tripping relay will be used in tripping circuit why not normal relay

833


What is meant by positive and negative feedback?

640


Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.

1600


bsec exam syllabus (mis)

737