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when ur using single phase type of load for a 3.5core power cable .Why neutral is .5 and how much current in the neutral if we consider neutral as a reverse path for three phases.
2 5749following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?
2119Is it possible to download the Siemens Selection Chart(TYPE 2 coordination) for 1) fuseless selection 2)Fuse selection
8297In a house wiring why we are using only one neutral wire and so many phase wires from the main board, when the load is common for both wires?
3 17170Post New Electrical Engineering Questions
what is the AC Plant and how can do the work with parts and picture tell us 150 Tr
How would your past experience translate into success in this job?
what will happen if there is a voltage leakage or current leakage in an electrical train
how to calculate cooling requirement of datacentre from electrical load?
What type interview questions ask in Electrical technicians
Hello Friends, How can we recognize the CT Star Point is S1 or S2 in case of Electro Mechanical Relays and what is meant by Restraining coil in relays and what is the purpose of that.. thank you in advance..
what is load vs Torque curve & why it is used?
What is the most important precaution in any experiment with d.c. Shunt motor?
anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?
what is the working principle of a DG Set, Alternator, & exiter
quantizer means?
how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.
difrent between vcb acb sf6 and mccb breakers
what is the affect of earth's magnetic field on the frequency used in aircraft???
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.
