Interested to Buy Any Domain ? << Click Here >> for more details...
what is difference between AC VVVF drive & Dc VVVF drive
explain their working principle?
- 13 Answers
- 48857 Views
- Apollo, OPS, I also Faced
- E-Mail Answers
Answer Posted / arfa
VVVF is a frequency converter for ac motor speed cotrol but
I dont hear "dc VVVF" .
| Is This Answer Correct ? | 10 Yes | 4 No |
Post New Answer View All Answers
what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?
what is the function of anti pumping relays? what is KVAR? How it is generated in alternator? What is 3rd Harmonics? What is IDMT relay?
hi frnds...pls send me aptransco previous papers .....pls..pls,,,(madhar.rocking@gmail.com)and suggest me some websites
how the characterstics of control valve being done
We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.
What is power in wattage of 8.5 TR AC
How 3 phase invertor works?
what is the reactance,capacitance & impedence electrical armoured & unarmored Cables.
plz explain the auot-reclosing circuit in electrical engineeing
THERMAL CAPACITANCE IS MEASURED IN..................................................
I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???
What is limitedly stable system?
explain transformer ct connection?
Meaning of ingrace protection for motor.for ex IPXY
what is the mechanism of operation of brushless dc motor why is it more wexpensive then ordinary permanent magnet motors
