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What are the minimum acceptable insulation resistances of insulation of underground cable suitable for 0.440kV,11kV, 33kV and 66kV?
2 6657Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?
NTPC,
2067how to calculate overall efficiency of diesel generator set? give us a formula with an example.
2 9496To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?
1973why ct's&pt'S out put called as burden,why compelsary short ckt the secondary of ct's while removing the burden?
2373what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW
8688What happens to an electric motor if it has poor or no ventilation. Will it burn out? If it will, how long it will run before it burn out?
GMC,
5 8326Post New Electrical Engineering Questions
Why does inductive loads consume KVARs?
how to calculate the earth fault current
wat system call?
Explain the construction of the conservator, operation and purpose, and draw the diagram of the conservator.
Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system.
What is highest size of HT motor like 11 kv or 33 kv,and how to make it 750 rpm.i think the size will be very big.any idea ? pl. reply..
Inverter. converter. Ups.MCB.solar.alternators. motors.
Do Phase angle measurement have any application in freq/harmonics measurement? If so how?
We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.
What is slope...? Explain slope 1 and slope 2...?
If only R Phase is connected in 2 pole elcb, n is not connected than it will work or not in ground fault.
Minimum IR value of 1.1 kv grade 3.5c (300, 240,185,150,120,95,70,50,35,25) sqmm Aluminium XLPE cable and 4c (16, 10,6 & 4) sqmm cu arm cable between RY,YB,BR,RN,YN,BN,RE,YE,BE & NE.
What happens if we run alternator on under frequency?
how we can come to know that motor winding resistance which showing by DMM is right or wrong???is there any chart or something that we will compare & check???
hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.
