Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / p.subash chandrabose
VFD- VARIABLE FREQUENCY DRIVE
VFD can be used as Variable speed operation
VARIABLE SPEED ACHIVED BY AC MOTOR IN 2 STEPS
1. VARY THE FREQUENCY
2. VARY THE POLE
THE FORMULA WAS N=120F/P
Eg:N=120*50 /4
N=1500 RPM
WE CANOT CHANGE THE POLE EASSY
BUT WE CAN CHANGE THE FREQUENCY ACHIVE BY VFD.
| Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
what are the problems that generally occur in power flows??
The windings of a transformer are divided into several coils, because?
I am interested to know what does 15 KVA DG set actually means? If I dont know the DG rating, is it possible to identify KW by simply knowing the diesel consumption?
State magnitude criterion.
armature is that part in which current is induced since in dc motor we supply current to the conductor so why we call it armature?
HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER
How we can defined theecopper cable size if we know the aluminium cable size?
What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?
List advantges of active filter over passive filter?
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm
why single phase to grd test in HV cable?why not 2 phase at a time?
Circuit diagram of tube light without starter using electrical choke
Is there any standard guidelines/Criteria to design NGR/NGT.?
I NEED RRB APTITUDE QUESTIONS AND MODEL PAPER,PLEASE SEND MY E-MAIL joo28_eee@yahoo.co.in
What is the function of the circuit breaker failure relay?
