Interested to Buy Any Domain ? << Click Here >> for more details...
when we have to use UPF wattmeter and LPF wattmeter?
what is the difference between UPF and LPF wattmeter in
terms of construction?
- 4 Answers
- 24658 Views
- I also Faced
- E-Mail Answers
Answer Posted / sridhar
lpf is stands for lagging power factor and upf stands for unity power factor and lpf where used in pure inductive load oriented where as upf where used in pure resistive load oriented. This is the main difference usage in experiments.
| Is This Answer Correct ? | 6 Yes | 2 No |
Post New Answer View All Answers
75 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?
Explain what is rated speed?
How to design a Unit auxiliary transformer for a power house having a unit of 65 MW and Generating voltage of 11 KV and Secondary voltage of 433V
what is earthing.how we make it,describe briefly.
What is the power factor of a transformer at no load?
How to decide CT & PT ratings for a given transmission line carrying some rated voltage?
what is the string efficiency
List few applications of d.c series motor?
In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?
what is diff. between earthing grid,earthing mess, earting grid?
how to design step down 12 V, 1mA small transformer from 220 V AC? Because according to VI relation and power transfer it results bulky...
can we install HT panel & LT panel side by side or how much clearance is required ?
how to find the voltage's of a transmission line plzz help with pictures i am not able to understand
Installation method of self treated earth electrode.
RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV
