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How to calculate the lighting load & power load requirement by knowing area of building/room. Is there any thumb rule?
3 19238Electricty is generated at around 16kV, then step up to 220kV for transmission then steped down to power transformers then DTs and then through the LT n/w it reaches the consumer end. At the consumer end 230V supply is required. So, why is electricity not generated directly at 230V and transmitted?
4 7746What is Load commutation and how it is done?Cite some example where this type of commutation is used
NTPC,
2 29192for 8 mva 33/11 kv transformer what will be the setting of differential relay on which it trip & what is the HF setting in this relay
2 4775electricity requires a medium to flow and it cannot flow through air. so how does lightning come to earth through air without any medium?
3 6131wat is the advantage of increse in frequency?how the powersupply range decreses as the frequency increses?like in america,it uses 110 ac and 60 hz?
4 6695Post New Electrical Engineering Questions
A ray hit a smooth regular surface at an angle of 20 from the normal. Calculate : 1. The angle btw the incident and reflection ray. 2. The angle of deviation.
How is the resonant peak, resonant frequency, and bandwidth determined from nichols chart?
The ripple frequency in output of fullwave bridge rectifier is a. Half the input b. Twice the input c. Same as input
Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.
The size and construction of bushings in a transformer depend upon?
Match the following a)(X'+Y') b)X'Y' C)XY 1)NAND 2)NOR 3)Carry
is the value of inductance depends upon the value of thitha in doubly excited machine??
Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????
i karmveer bharti persuing b.tech . plz send me syllabus and name of reference books. for preparation of section eng.
1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?
What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?
how is working bearing heater?
in cvt,there are two windings,1a,1n and 2a,2n.in my one project i use only one winding i.e.1a,1n. the other winding is not in use, so i connect it in open delta and want to close it by ibsertibg thermal resistor. the output of cvt is 132kv/115/sqrt3. plesae tell me exact value of resistor, so i may close it to avoid the resonance phenomenin. send me answer on this email adress please. aetcon-po@aetcon.com
what is the ms flat constant for calculating earth mat design calculation?
What will happen if we on 200kvr capacitor bank(11kv in bus)If there is low load on transformer (1.5 mva 33/11 kv)
