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What is short circuit analysis of electrical networks?What are the procedures to be followed for its calculation?
DLF,
2 8175how the arcing is made in ac electric arc furnace? ( between the three electrodes in any sequences or between the electrode & the charge(steel))
1 46921)what is the function of a frequency inverter? 2)If a few frequency inverter are connected onto a device network,what are the two setting that will ensure the frequency inverter work properly on the network. 3)whats is the name of the input sensor for weigher? 4)How to confirm that the load cellis faulty? 5)Describe briefly the steps to validate that the weigher is working properly? 6)Describe the procedure to validate the flowmeter accuracy? 7)Describe briefly the steps to validate that the tempreture sensor/transformer is working properly. 8)what is the adjustment that need to be done when you are calibrating the temperature transmitter ? 9)what are the safety measures to be taken before disconnecting motor for rewinding. 10)whats is the synchronous speed in rpm of typical 4pole 50hz motor? 11)whats is the formula for kw, ohm's law 12)if a 3phase motor is rated 3kw,415vac,what is it's rated ampere?
1860starting torque is increased and current is decreased by using external resistance in a slip ring induction motor. How??
3 7844how can we select the type of wire.what factors we have to look on it , do we have some formula to calculate it. please guide me on it
1946what will happen if phases are not shorted with neutral in transformer impedance test? and if neutral is not connected with ground?
1 4170Post New Electrical Engineering Questions
what is the formula for calculating the phase clerance between two phases and phase to earth how to calculate the cable for a motor
WHat is the requirement of installing FAST ACTING EARTH SWITCH in GIS and how is that integrated with protection system. How and when does it operate?
what is the difference between directional & non directional earth fault with example please explain.
What should be the Sandwitch type Al. bus bar capacity for 2 M.W.Gen. set, having continuous full load current- 3463 Amps,ambient temp.- 50 Deg. C., Required temp. raise-20 deg.C., it will run 24 hrs, 365 days on full load, required highly reliable.
physical identification of HT & LT panel
What are the material used for resistor?
Why you are switching off arc protection mcb when you are taking shutdown for lv board.
If i have two 3000 kW motors and the whole facility requires a 10 MVA transformer. What would be better installing two 5 MVA transformers(one for 1 motor ) or just a single 10 MVA transformer for both of them. Give reasons for your answer.
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Why does amplifier gain reduce?
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
What is current & voltage ? Voltage perform at any load without current or not?
Do closed loops systems require manual input?
what is the minimum requirement gigaohms for the insulation test using 5kv in 300mm xlpe cable
what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?
