Answer Posted / rodney
a protective device which breaks whenever current flowing
through it exceeds the rated current.thus breaking the
circuit,only under fault conditions.
| Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
Define the term Capacitance and Inductance?
How wire size can define in electrical wiring? What is the ratio?
What is the role of feedback in a closed loop control system?
how maney type tempereture measurement ?
how to get bearing & winding temperature of an induction motor?
whate is the meaning of balance/unbalance,in stabilizers type
What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?
I am having a 1500 KVA transformer whose secondary current is 2086A and my connected load is 1000 KVA, I am having 400 KVAR APFCR for PF improvement what ratio of CT should i install in LT EB Bus to get optimum PF improvement?
what & how to check the lightning arrester
what is the major difference between LIBBP & HIBBP.. which one is most preferable..
Why can't we parallel the secondary circuits of two voltage transformers?
What are the limitations of Kirchoff's laws?
why the projects getting loss?
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.
What is difference is of VSD,VFD,VSDS, are they the same as the direct current to control dc using above mention