Interested to Buy Any Domain ? << Click Here >> for more details...
can u please tell me how VFD(variable frequency) drive is
used as a energy saver....?
- 12 Answers
- 20977 Views
- Essar, Oracle, I also Faced
- E-Mail Answers
Answer Posted / girish kumar samal, hindalco,h
in vfd we change both frequency & voltage. as we control
frequency so speed will control * hence torque &hence
current. as both current , voltage controlled so energy
saved.
| Is This Answer Correct ? | 6 Yes | 7 No |
Post New Answer View All Answers
In a large office how do we calculate required number of light fittings, assuming fittings are 4x18W or 2x36W fluorescent fitting ?
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
gas turbine genrator reactances
limitation of conductor height on ground when we consider EMC
mccb service sittings be done?
what is formula to cal cute earth pit numbers and size of earth strip used in earthing?
What is the function of capacitor in electrical circuits?
Explain the experiment on ward leonard method of a speed control on a dc shunt motor with an suitable circuit diagram.
WHAT IS THE WORKING PRINCIPLE OF A GENERATER.how is a GTG (Gas TURBANE Generater) working.plz explane
what is meant by directional earth fault and non directional earth fault? describe both.
How much no load current of synchronous motor
generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...
How to select, design,size & calculate for 11 KV/33KV/66KV/132KV/220 KV/440 KV circuit breaker for HT side of transformer protection/HT distribution protection?
which is chemical used as in ro water what is difference betweeen multi grade filter&dual media filter
draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it
