Interested to Buy Any Domain ? << Click Here >> for more details...
Explain why machinery used on a.c supply is usually rated
in KVA instead of KW?
- 10 Answers
- 22431 Views
- EEE, Mtandt, I also Faced
- E-Mail Answers
Answer Posted / manugirl
t is because machinery used on ac supply are transformer regulated and the certainty that transformers are rated in KVA so as machineries used on ac supply should be given contained by KVA rating.
AC supply machines are rate in KVA . The total power consumed or supplied by the system depend up on the power factor of the load. As you know KVA= KW / Power factor.KW will cash for power factor.
Also size of a AC system is depend up on the insulation requirement (depend upon voltage) and size of conducting material( depend upon the current) so Voltage x current will give VA or Size of AC system
All AC power sources like transformers, generators, inverters etc. are usually rate in KVA.
The reason is that surrounded by the case of a power source, you cannot predict the type of load (resistive, Capacitive or Inductive) that will be connected to it. Hence the actual usable size rating depends on the power factor of the load.
Power = Voltage x Current x Power Factor
If the load is resistive, PF is 1 (unity) and if the nouns is inductive, it will be less than unity.
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
what is RFID? thire application;
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING) I O (current operating)?
Power Factor Correction Panel (Manual & Automatic)
what is the solution for meger test failed the MV cable?
What is true sine wave or pure sine wave inverter?? Is it sine wave or step wave?? If it is step wave, waves with how much step is considered as pure sine wave? Is it possible to produce pure sinewave using power electronics?
Which type of motor is used in trains, what is the rating of supply used explain working principal?
How to calculate the sag of OPGW during stringing???
What will happened if the neutral of secondary of Xformer ( Star point) Note it's above KVA rated Xformer
What is earth system using on the floater TN-S or TT. Iam not sure and what ICCP
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above
What do you mean by passive circuit elements and why these are called passive?
Why open circuit test of transformers is conducted at rated voltage??Why not any other voltage??
what is differentila pilot supervision in the incomer control panel in the power station?
What is the effect of positive feedback on stability of the system?
Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..
