Answer Posted / suresh
VFD – variable frequency drive..
VFD is useful in energy saving because it reduces the
motor speed as demand decreases.When the speed is reduced
the power consumption Will also reduce because ,
Power = (speed)3 {cube of speed}
For example if the speed is reduced to 80% of the maximum
value the power consumed will be reduced by 50%
Power consumed = (0.8)3 = 0.512 = 51.2%
| Is This Answer Correct ? | 108 Yes | 8 No |
Post New Answer View All Answers
what irequirment need to be followed when working on live equipment
hi this is hema can anyone mail me previous years questions for the APPSC-A.E.E (in electrical stream.) ......thank u.
what is feeder bay?
1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps.
Basic motor transformer generator
some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?
wow to calculate the transformer rating(KVA)
Draw torque - speed curve and load curve of induction motor? mark operating point ?
1- What is the Polarization Index number be good for 15KV 3c#500MCM electrical cable? 2- Can I use the IEEE Std 43-2000 to perfom the PI test? Thanks
what is the interrelation between voltage current torgue speed and magnetic flux in case of different types of electric motors
sir i completed apprentice in TNEB.apprentice is eligible for 'c' licence
How to calculate cable size by using load.?? Any formula...
Different types of relay fault which phase sequence??
If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?
Which cable is use for rtcc control panel
