what happens when a DC supply is given to AC motor?
Answers were Sorted based on User's Feedback
Answer / nd.palanivel
No rotating magnetic field is generated and hence the motor
will not rotate, instead a break is applied on the rotor for
a sort period. Depends on the magnitude of the DC supply and
the DC resistance of the coil, heat will be generated on the
coil. Coil will burn if the supply is applied continuously.
Is This Answer Correct ? | 110 Yes | 5 No |
Earlier reply is OK, some more elaboration given below
No rotating magnetic field is generated and hence the motor
will not rotate,
No back EMF will be generated,
reactance(XL)will not come effect as frequency is "ZERO",
Rotor impedance will be remain isolated from equivalant ckt
of stator.
Only resistance of stator ckt(which is very low) will be
there. Hence stator current will be very high,Motor will
burn.
Is This Answer Correct ? | 74 Yes | 0 No |
Answer / sunil g parit
it draws the excess current motor in not rorating due to
rorating field id not generating,it bocomes hot Or failure
of motor
Is This Answer Correct ? | 8 Yes | 1 No |
Answer / rajan raju
WHEN DC SUPPLY IS GIVEN TO THE AC INDUCTION MOTOR THERE IS
NO PRESENCE OF ROTATING MAGNETIC FIELD SO MATOR DOES NOT
ROTATE BUT THE FIELD WINDING IS LESS RESISTIVITY SO HIGH
CURRENT WILL BE DROWN AND DUE TO THE PRESENCE OF HIGH
CURRENT MOTOR WILL MAY BE BURNED
Is This Answer Correct ? | 6 Yes | 1 No |
Answer / pranav priyadarshi
actually when dc supply is given to ac machine there will generate const field due to which rotor won't rotate, and also stator draws large current due to which i^2*r losses is more and hence more heat is generate ,due to which machine may burnt out......
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / c.rajakumar deee.,be.,
Motor will draw more current .
A hissing sound and a dampering will occur in motor it may
damage the motor severly and results in coil burn also
Is This Answer Correct ? | 0 Yes | 4 No |
how to design the heater in temperature control unit to heat 50KL of water?
Why distribution transformer secondary voltage is 0.433kV instead of 0.415kV.all other switchgear rating are 415 volt??
What is the difference between Earthing and Neutral?
how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)
A Question Like A Wire Is Wound Whose Resistance Is Some 132. 44647 Ohms. If A Voltage Of 30 mv, 296 Ma Current Is Applied To It What Is The Resistance.
how many type of of electrical fuse please explan?
If I have 3 essential main switch board and 3 incoming electricity ,but only 1 genset running is that possible.
A three phase load, around 4 km away from the 11/0.433KV distribution transformer (Neutral of Transformer is solidily earthed) and consisting of mainly very costly and sensitive electronic equipments is giving trouble due to high voltage difference between neutral and body earth. Whether this problem can addressed by connecting neutral at the load point solidly to earth?
What are two contours of nichols chart?
what is the principle of synchronous motors?
What is HT? And specify the range of voltage?
Capacitor bank require for 1000amp load
2 Answers Biodeal, Pharmaceutical,