WHAT IS THE MEANING OF 'UPF'&'LPF'.... HOW CAN WE DEFINE IT?
WHAT IS THE VALUE/RANGE OF EARTH WIRE RESISTANCE USED
PARTICULARLY IN HOME....
- 2 Answers
- 22009 Views
- I also Faced
- E-Mail Answers
Answer Posted / dilse
unity powerfactor:when voltage and current are in same
phase i.e displaced by zero degrees simply cos(phy)=1;
where phy is the phase angle b\w voltage and current
low power factor: when current lags behind voltate by angle
phy,usally cos(phy)=0.1 to 0.4 corresponds to low power
factor
| Is This Answer Correct ? | 21 Yes | 4 No |
Post New Answer View All Answers
why magnetising curve not start with zero voltage?
Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB
for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?
how to check regenerative load in drived motor
what is the necessary of using inductance property in transmission lines even through resistance is used to opposes the high current flows in that?????
how to determine Sq.mm size of finolex power cables.
when qty of cable being purchased is not sufficient according to the standard,what should the inspector do to ensure its quality according to the standard?
What is the meaning of Insulation H for transformers????
How the circuit breaker is selected for Induction motor of 100 kW, 415 volt, 0.85 power factor, 0.95 efficiency ?
HOW TO DESIGN THE body EARTH cable(Copper Conductor) size for 60KVA UPS?
What is the basic principal, by which DC voltage level is increased more than the supplied AC voltage during conversion. As upto AC level it is contorrled by firing anlge but after maximum level how is it possible.Please clear picture. OR we have to supply the higher level AC?
what is the size of ht cable of 33kv ht line and transformers ratings are 1 Mva and 5mva.please send formula also.
What is Load sharing of Transformer ?
What are PLC leader logic program method
1.what is difference between ATS & STS main use. 2.what is difference between ACB& VCB With symobles,and main partes, manimum range. 3.How many types of relays and main function.
