Supose we have one 220v A.C fan.if we provide 220v D.C what
will be happen?
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Answer Posted / sanket
FAN WILL NOT WORK . BECAUSE IT NEEDS NEGATIVE HALF CYCLE TO
COMPLETE ROTATION.
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a)In a 3-phase 4-wire circuit, a circuit breaker is selected to protect the circuit whose highest fault level is 6.6 MVA. Determine the required minimum breaking capacity in kA. (Note: Covert 3-phase power in terms of kA to find answer.) b)Using the below, determine the required minimum making capacity in kA as a “peak value”. Rate breaking capacity (Icn) ka: Icn<= 1.5 Factor = 1.41 1.5
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