in trains i have seen the terminal which is connected at
the top of the train is positive .where is negative ?
track? i dont think so
- 9 Answers
- 8475 Views
- I also Faced
- E-Mail Answers
Post New Answer View All Answers
what is the Transformer Impedence?How can calculate?
why ss stablity limit is more transient stablity limit?
what kind of quetions will ask in BHEL in interview? Plz help me?
explain the function of brush less dc motor?
Which is the oldest hydropower plant in india?
how does an centrifugal and screw type chiller will work. which chiller efficiency is high and why.
with out colour codeing on conductor how can be find what is r,what is b,what is y phases.....
what will happen if ac and dc supplies given
What is power factor why we should maintain the power factor unless what will happen
What is routh hurwitz stability criterion?
what is the IEC standard for Power Cable installation in onshore (like in direct buried ground or above groung)
What is the difference between earth fault protection of motor feeder with CBCT and Without CBCT ?
What is meant by vector group
diff b/w normal grounding and resistance grounding
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.
