what is the difference between electrical & electronics
Answer Posted / vijaymuthu
eletrical is transfor a.c current-electronics is control
circuit in d.c voltage
eletrical use fundamental all purpose--eletronics use based
|Is This Answer Correct ?||748 Yes||441 No|
redundant connection in contactor?
1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.
2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?
Is vtg is controlled by the resistor? if else how much?
where reactive power is used
How i can decide that HVDC line is best for transmission.
How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?
how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt
We have Diesel generator of 200KW. fuel consumption is always same,even connected light load or full load. Is it right?
How to calculate multiplying factor of dc energy meter
neutral earth resistance testing is it possible for transformer while in load condition
33kv substation lay out details & line to line & line to earth measurements
WANTCONTACT NUMBER & EMAIL/ WEBSITE TO CONTACT THE SECRETARY,MADHYA PRADESH LICENSING BOARD(ELECTRICAL),K- BLOCK,3RD FLOOR,SATPOODA BHAWAN,BHOPAL
How many turns are there in primary winding? (In Transformer)
why +24 v and -48 v give to BTS? If -48v protect from surge then why we not use -24 v?