what is meant by Ac & DC drives where its useful ? how its
functioning ?
Answers were Sorted based on User's Feedback
Answer / n rajesh
AC and DC drives are used for smooth speed control
purpose.Now a days A.C drives are prefered due to low
maint.
Is This Answer Correct ? | 9 Yes | 0 No |
Answer / rakesh
AC & DC Drives are used in traction system for example in
Railways. In railways for the regenertion braking system.
Is This Answer Correct ? | 6 Yes | 2 No |
Answer / ashhad khan
first of all why do we call it a drive instead of just calling it as a motor . its because ac drive or dc drive is a combination of a controlling circuit and a motor. so that we can control the speed, direction and regenrative power.
and these drives are mostly use in railways thats why sometime they will be called as traction motors.
controlling circuit used is a combination of thyristors and diodes so as to change the voltage or frequency to control the speed of ac drives.
by ashhad khan u can ask me more on ashhad18@gmail.com
Is This Answer Correct ? | 1 Yes | 0 No |
What determines the thermal loading on the motor?
how to find the resistance
Is it possible to measure the voltage of a battery from a single terminal?
a 100mva,400/200v transformer has leakage impdce of 10% draws a steady state line currentof---------------
if you asked to choose a ckt breaker from MCB & MCCB for 32A which one will be best and why??
If a HV Underground Cable (13.8KV) is layed in the ground below 1.5 Mtrs and any building construction is done on the Cable route. IS this allowable or Not? What should be the clearance. As per ISO construction on HV cable route is safe or Not? Why? Can any body suggest the site for my question?
Electricty is generated at around 16kV, then step up to 220kV for transmission then steped down to power transformers then DTs and then through the LT n/w it reaches the consumer end. At the consumer end 230V supply is required. So, why is electricity not generated directly at 230V and transmitted?
if 20 hp motor starts directly delta connection.motor what will be the effect.
What is the tipical Online UPS input voltage for 20 KVA load ( 3 Phase or 1 Phase )? Why ? Explain it...?
tell me working of air circuit braker.
what is the difference between a race around condition and toggling?
what is difference between power & distrubution transformer ?