How do you create event chains?
what is the application of induced auto ploypoidy in crop improvement ?
what types of bugs will we find out in banking projects
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.
hi i m bhawna ,a student of mca want to know about what type of technical question has been asked in an interview of mnc's like HCL,TCS,WIPRO
What is testing & explain standard testing
what are the purpose for the preparation of cost centre ?
What are the interview question on insurance domain in manual testing
If job is slow?
How can you see partner data using webservice.
why dc is used in control circuits for MV & LV switchgeras instead of ac
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WHAT IS MEANT BY TV TERMINAL IN 500MVA TRANSFORMER?
few questions on RS 232,1 question on relationship of impedance and turns ratio, many questions on flowmeters
Its danger for human to sleep at night under a big a tree, why its not danger for birds because they sit on the tree whole night?