Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / mubeen
Voltage frequency can be changed by using of VFD ( variable
frequency drive ) which consist of SCR,Diode,etc.it can
make from zero to > 250 HZ.means can control the motor
speed or frequency of suppllied voltage.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
How do you select the pickup value of the relay?
Who are the manufactures those manufacturing 3Cx2.5sqmm FRLS cables. I heard about FRLS technology adopted only in wires useful for wirings
how to find number of run cable laying[LT side] for transformer & alternator secondary side? [above condition for getting output power transformer to main panel side] give the example.
I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?
kVA rating of ordinary transformer is increased when connected as an auto transformer because A transformation ratio increased B secondary voltage increased C energy is transferred both inductively and conductively D secondary current increased
What is dc current source? Differentiate between ideal and non ideal current sources?
how hazordious area is classified at an oil & gas plant and categorise suitable class of electric equipment in that area like induction motors, LCS, Lighting Fixtures Fluerescent/Flood lights Mercury& sodium lights, J.Bs, Power Cables etc
why in an industry; machine having rated 200 h.p stopped after power factor is maintained above 0.97 lag by control panel in view-of energy saving
10 tube light connect in mcb breaker.one tube light is fault.so breaker is tribe.how fault is rectified.(using 3wire phase,earth,neutral)
can we use trip light with bus coupler?
what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?
raleigh method
WHY THE DIMENSION OF TWO SAME RATED MACHINE IS DIFFERENT ?
What is stacking factor? What is its approximate value?
What is rotating magnetic field?Discuss elaborately.
