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....
Answers were Sorted based on User's Feedback
Answer / praveen jkumar sharma
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
earth resistance varies from 2 to 5 ohm.
Is This Answer Correct ? | 25 Yes | 4 No |
Answer / 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 |
HOW BETTER VOLTAGE REGULATION IS OBTAINED BY HIGH VOLTAGE TRANSMISSION....?
what is Anti-pumping?
what does a string of resistors in a series will do?
Difference B/W A/C & D/C Motors..?
line and phase voltage relationship?
How many double suspension hardware fittings are required on a double circuit transmission tower?
What is d diff. btw MCB & MCCB???
what is the difference between mho characteristics and quadrilateral chara in distance protection
After synchronization with grid what is the demand value QKVAR and how we will maintain that?
what is difference between neutral& grounding?
I need the proper answer on :- What is the Earthing Value as per the standard for Raw power and UPS Pit and in panel /DB N-E value ???
for a machine R=130 KVA Y=132 KVA B=144 KVA Then what will be the total kva