What happens if we give ac supply to dc shunt and series
motors individually
- 4 Answers
- 9374 Views
- Essar, I also Faced
- E-Mail Answers
Answer Posted / kdharanya
both the motors will not rotate
when the teminal voltage supply for a dc motor is changed
its direction of rotation changes.
With a ac supply to its terminals there will the change in
the direction of supply every 20ms(in case of 50hz freq)
Due to this very high change in the direction of terminal
voltage and inertia of the motor the rotor does not rotate.
| Is This Answer Correct ? | 13 Yes | 16 No |
Post New Answer View All Answers
state the working of discharge lamp?
WHAT IS counter flux IN CT?
how does high earth to neutral voltage affect electronic equipment?
What do you mean by Frame 5 Gas Turbine as well as Mark II.
Why we are going for converter transformers for DC drives application instead of distribution transformer?
I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?
What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?
please I wont know how to calculate the vector group for power transformer ZNyn11 best regard.
A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.
Single line digram for 11 kV to distribution use go,la and do
wat is the first thing dat is needed, 2 lay a cable in some area??
What is error of a measurement?
1. transformer design formula ? 2. how to calculate the primary turns and secondry turns ? 3. core types ? 4. how to find the primary current and secondry current ? 5. how to calculate the stacking factor ? 6. range of fulx density ?
PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL
how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)
