IF we have 500kva transformer & know the current on HT & LT side, how can we consider for its breaker?
Answer Posted / roy
ROUT 3*V*I=KVA
SO FIRST YOU SHOULD MENTION THE VOLTAGE.
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The loads are connected with phase and ground then why current flow as the loads ?
im electrical engineer, could any one help me for FEWA exam questions please ?
7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
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