Interested to Buy Any Domain ? << Click Here >> for more details...
What meant by lagging and leading? When if they are
occurred what preventive methods should be taken?
- 14 Answers
- 56963 Views
- ABB, L&T, I also Faced
- E-Mail Answers
Answer Posted / aravinda
consider voltage and current as phasors, angle between voltage and current is positive then leading (in case of capacitive loads) viceversa for lagging (in case of inductive load)
prevent lagging by parallal connecting capacitor banks or over excited synchronous motor
no need to prevent leading pf,
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
can u give me a brief idea about power line carrier communication ??
what is capacitor voltage transformer?? how it is different from potential transformer?
Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?
In which working principal temperature transmitter work.explain in detailed.
What is reverse power relay?
how many stairs have you climbed while you were coming
what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?
what is active power & reactive power?
What is minimum phase system?
In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?
electrical
1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.
Discuss the effect of sudden loading of an induction motor
which is better to use svc or synchronous condenser why ?
What are your personal skills and abilities for such a Master Course and your possible preparation to undertake this course?
