Answer Posted / pushpendra kumar
Variable frquency Drive, principle of the same is by
regulating the frequency, we can regulate the speed of
drive
Example - n=120f/p
Where,
n - speed
f - frequency
p - nos of poles
By the equation we can calculate the all parametes shown
above.
| Is This Answer Correct ? | 57 Yes | 6 No |
Post New Answer View All Answers
What is the formula to calculate the size of Aluminium and copper cable?
how to test and calculat the head and discharge in borewell compressor
For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.?
How will be the single line diagram of series trip HT breaker? how it works?
Define what is difference between fuse and breaker?
mccb service sittings be done?
Is it required to lay GI wires along with GI/MS conduits from one point to another point though separate earthing cable is conncted from DB to Socket?
DG cranking voltage?
how to calculate differential current when we testing differential relay..suppose we have 1000kw generator,630amp VCB,what value we should put /inject so that relay trip the VCB? PLLZ justify ur comment
hi....I am from india..i have completed my engineering in electrical and electronics field with 58.4% and my IELTS score is 5.5 bands....Recently i received my I-20 in computer and information science from Troy university in Alabama.On 18th i have a visa interview can u please tell me what type of questions i have to answer ??????
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.???
EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.
what's the difference between abs/inc encoders. apart from the position remembrance what are all the other differences. and what's mean by grey code.
What is the rotor frequency of 10 Hp 1440 RPM 50HZ 415V ?
Define transfer function?