what is the difference between ac drives and dc drives?
Answer Posted / pillay
drives are usually the motor that drives the machine. if the
motor is DC operated than it is a dc drive like wise if the
motor is AC than it is a AC drive.For ac motors vfds are
commonly used for speed control.
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What are the two basic types of transformers?
Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?
why swityard is necessrry requirement in any bis power distributin systems?
How many capacitors using in LT panel as per Govt rules?
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
we have 3.5MVA-11/6KV transformer. how can we calculate earth fault current and NGR calculation?
what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?
What is resolver and glass scale in CNC how they work?
define hysteresis loss, eddy current loss and windage loss
What does the letter CTNM in negative phase sequence relay means?
An active element is one which a. Supplies energy b. Absorbs energy c. Supplies energy and convert energy from one form to another
What is the maximum operating temperature for a thermoplastic insulated cable?
What is the difference between single point and double point bonding. please kindly detail about bonding of cables.
The inventer is a battery, but if lost current at home u will turn on the fan but the is AC and inventer battery is dc . Then how the fan was rotating. What device Or machine in fan converst the Dc power to Ac power
why Lightning arrestor are made by 2 seperate stack of inslutor but why cvt are in single stack of insulator.