what will happen if dc motor given ac supply
Answer Posted / b.dayakar reddy
>>When A.C. supply is given to a D.C. motor,
1)In case of Series connection of armature winding and field winding , it may run.
2)But, In case of parallel connection , it won't rotate at all and will start humming and will create vibrations, as a torque produced by positive and negative cycle will cancel out each other. D.C. motor will be heated up.
| Is This Answer Correct ? | 6 Yes | 1 No |
Post New Answer View All Answers
how we can adjust for three phase motor cold stall time ,hot stall time and thermal register set up?
In single phase capacitor motor, if the motor rotate reverse direction then how much power will be consumed by the motor and why?
Why a tesa lamp is glow between two phase?
why impedance relay is used for medium transmission line protection
The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.
please send 5yearje solved papers on my email himmatsinghnathawat@gmail.com
If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?
How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?
How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.
State and define norton’s theorem?
i've iocl interview.. if you know the interview process please give me information..
-What should be minimum value of insulation resistance and maximum value of earth resistance at any electrical instillation and what is method of testing the same.
why would amp draw on neutral wire be as much as amp draw on the hot leg.
what is star delta starter? how it works? give its control and power diagram.
How to derive detailed design of Suitable bus Bar for 100A for 6.6KV?