In a 132KV Grid Station where voltage level is 132KV, here, why the rating of Surge arrests installed 120KV ?
Explain cmrr?
Multi-step core is used in transformer to: A) Increase the output B) Decrease the cost of core material C) Decrease the cost of copper D) Increase the efficiency
It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.
For 300MW and over a distance 250 km, what voltage be selected? and no. of circuit?
1.Whats the use of GNAC(Generator Neutral Accessory Compartment) 2. why generator or any other system require Neutral Grounding and not Phase grounding 3. what happens if any one of the phase is grounded. 4. if 15kv is grounded directly what will happen, why it should not be grounded like that 5. use of of NGTR(Neutral Grounding Transformer and Resistor) for grounding is helpfull and how
5 Answers BEMCO, CSS, Powergear,
why indicated sypply only by 440V in 3-phase system.
how many types erthig
out of all machines which have highest efficiency and why?
wat is the first thing dat is needed, 2 lay a cable in some area??
What is GND Transformer?
Why is a thicker conductor necessary to carry a current in A.C.as compared to D.C. ?
The inventer is a battery, but if lost current at home u will turn on the fan but the is AC and inventer battery is dc . Then how the fan was rotating. What device Or machine in fan converst the Dc power to Ac power
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