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Answer Posted / debajit ghosh
The differential relay calculate the current of primary
side and secondery side within the ratio.
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At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?
What will be the effect if I use inverter as UPS mood?
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm
What is inductance?
Why the field rheostat is adjusted such that the voltmeter reads 380V
Why the power generated in dams is complex power? Why the generators in dams cannot produce Real power directly (i.e power which has zero reactive part)?
what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?
What are the special cables required for explosion proof wiring?
When will you multiply and devide with derating factors to the actual value while sizing the cable?
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why is the conservator tank painted white on the transformer
if voltage bt phase & nutral is 38v in a panel board . whats the root cause.
what happens if dc supply is given and the remedies for it.
What is diversity factor in electric installations?
Power factor =1.000 at factory in supply. However, PF = 0.8 at motor end. Current = 100 Amp, Voltage = 400 V. What is the power distribution loss? Can I reduce it by adding capacitor at the load feeder?
