what happens when ac supply is given to D.C motor.
Answers were Sorted based on User's Feedback
Answer / mallikarjun n
nothing doing...if we give dc supply,o/p will be 24vplts..
if ac,o/p will be 230 volts.if we give ac,motior will run
at const speed.if we give dc,it wil start at 50rpm and
gradully increase 2 160rpm,if it crosses rated rpm winding
will burn will more spark induction takes place..
so dont give ac supply 2 dc motor.be careful
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / maulik
motor willl run but it will run with reduce speed and also there is a spark in the motor
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / karthik.n
Because of the presence of low resistance in DC motors. The
motor will not with stand the AC current voltage so the
motor burns after working for some desired period.
Is This Answer Correct ? | 1 Yes | 3 No |
Answer / mahender
if dc motor is shunt type, then it will rotate.But, if it is
separately excited dc motor then, the motor will not rotate
due to quick change in its direction per every cycle.
Is This Answer Correct ? | 0 Yes | 4 No |
Answer / aniruddh
AC apply to DCmotor frequency dependent losses increse
(eddycurrent&core)losses
motor gives less output
Is This Answer Correct ? | 4 Yes | 18 No |
Answer / sam khanji
The Motor will run only on the positive side of the Ac
wave .so it will run and stop then run again and stop again.
but if the volume of the AC is high, then the winding will
be burned due to the high frequency exposed to
Is This Answer Correct ? | 5 Yes | 20 No |
in india why 50 hz and 220 volt taken as standard rating for equipments whereas in US 100hz and 110v is consided as standard rating.is this method save power.
DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.
what is the harmonics? which harmonics(fundamental and reference) is suitable for calculating capacitor bank and Active filter and passive filter? what is the 1st 2nd 3rd 4th 5th harmonics and effects?
What is the function of Antipumping Relay and Lockout Relay?
What is the difference between INVERTER and UPS?
how will you determine the short circuit capacity of a network
why is the power generator connected as star earthed or star earthed through reactance and what its features ?
In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?
what kind of motors are used in the winders of coal field?and what are the various methods of it's speed control?
In Plumbing services What are accessories we consider for a bathroom?
Please give the formula for converting from 1 tr refrigeration to kw.
what is mean by tan-delta tap in the potential transformer??