Latest Answer : Actually, we use fans for cooling of transformer fins. ...
1. what is the different between CGS system and MKS system? 2. When we connect the capacitor Banks in Series with the circuit 3. What is the difference between Earthing & grounding 4. how much voltage
Latest Answer : When the current lead in the circuit use the capacitor in series. ...
Latest Answer : When there is a sudden loss of load, The Generator terminal voltage increases due to the fact that the IX drop in the generator winding decreases. The EMF generated being the same the reduced reactance loss leads to a sudden rise in generator voltage..but ...
Latest Answer : Nothing because the transformer needs variable excitation field, but DC is fixed, in this case the transformer will be as Magnets only. ...
Latest Answer : Transformer rated in VA bcoz its power losses depends only on voltage & current not on power factor. Copper loss depends on current & iron loss depends on voltage. ...
Latest Answer : by ac series resonance circuit. This case happen in trasmission line that recieving end voltage is greater than sending end voltage. But have some negative point also present. This is ferantee effect. ...
Why are we employing star type transformer at transmission end and delta type transformer at receiving end?
Latest Answer : Delta star transformer used in distribution purpose because of earthfault on star side do no reflect on delta side of winding. Zero phase current is eleminated in delta side of transformer and another reason for delta winding line current = 1.732 * Phase ...
Why do we rate transformer in KVA not in KW?
Latest Answer : Efficiency of transformer depends on core loss and copper loss. Core loss depends mainly on voltage and copper loss depends on current passing through the winding. So basically total loss i.e. efficiency depends on voltage and current that is why we rate ...
The designed capacity of the transformer was 1600 watt. The utility company is in shortage of such wattage, so they used two 800 watt transformers in parrallel. The utility company uses only one circuit
Latest Answer : We should use one breaker because when one transformer was overload then If one breaker use = breaker is tripped and system is completely off.If two breaker use = one transformer tripped and load shifted to another transformer thats should damage ...
Why the transformer will burn if DC supply is given?
Latest Answer : In transformer coil introduced reactance which cause sufficient reduction of
current, but in case of DC supply frequency is 0 so the reactance hence a large
current flow which cause burning of coil as heat produced depend upon current.
Heat Energy ...
