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CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE
IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND
TAKING OUTPUT FROM PRIMARY?
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what is the difference between RMS & TRUE RMS VOLTAGE
Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV
How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?
why current flow to the opposite direction of flow of electrons???????????
Define rise time.
Define Electrical Insulation and examples of Solid,Liquid and Gaseous insulating materials?
what is the meaning of impedance protected in instrument cooling fan
can anybody tell me that for p.f. Improvment we use capacitor banks but how to decide its capacitance. As we all know how to calculate kvar but what abt capacitance value
Why we are use dol starter up to 10 hp
what happened when we supply a dc current in dc motor?? can it worked properly?
How to decide whether A / B / C / D curve type MCB should be used?
During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.
Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??
Why control of DC motor is simpler?
Define open loop control system.
