Interested to Buy Any Domain ? << Click Here >> for more details...
When the power Factor (p.f)is lead then how the Voltage can
rises?
- 1 Answers
- 4323 Views
- I also Faced
- E-Mail Answers
Answer Posted / nileshvalvekar
When p f is leading means a leading current is supplied by
the system to the load.In this case load current leads the
load voltage by some angle so the phaser of voltage drop in
resistance & reactance leads the supply voltage( please
refer the phasor diagram) which causes the load voltage to
rise than the supply voltage.
NOTE:- to have a proof of this you need to see the vector
diagram of power system during lead power factor condition
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
What is EHT tariff or Power factor Tariff ????
If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?
State nyquist stability criterion.
why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?
1)how to reduce the value of tan delta of trasformer and CB,bushing,CT&PT,CVT ? 2)how to reduce the resistance of CB contact and its operating time? 3)plz.....send me the project report on conditioning and monitoring of substation equipment on my email id (gusaiyogendra03@gmail.com)
What is the drawback of static coefficients?
how does high earth to neutral voltage affects electronic circuit?
PLZ SEND ME SOME UNIQUE PROJECT OF ELECTRICAL ENG (B.TECH)
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
can we find the inductance of a induction motor?
What are the main advantages of bode plot?
what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator
Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?
When we connect the large capacitor bank in series ?
calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.
