Interested to Buy Any Domain ? << Click Here >> for more details...
In india the power supply is always in multiple of 11,
eg.220 V, 440 V...
what is the reason?
- 11 Answers
- 25571 Views
- BSES, Electrical, L&T, PSIT, I also Faced
- E-Mail Answers
Answer Posted / mohideen
this is due to the power factor of a pure sin wave is being 1.1
| Is This Answer Correct ? | 12 Yes | 33 No |
Post New Answer View All Answers
how to changeover ups in this power failur time?
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.
hello friend i wish to study a course related to the electrical construction, controlling and monitoring , which course i want to study? pls give me the name of institute?
What type interview questions ask in Electrical technicians
Why ground terminal is used in pot meter 10k ohms
various transmission tower like .,D tower ,K.C.O tower ,C.C.O tower,K.C.R tower ,C.C.R tower ,H.C.O tower in different tons.
What are the different types of controllers?
Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???
What is the permissible maximum flux density in transformer core?
what shoud be strength and weakness to impress interviewer????????
What is the difference between PLC and Embeded system
What is the general power consumption rating of CPU CRT type and Flat type, Monitor,Printer, projector, Scanner?
what are the advantage and dis-advantage of 3 phase 4 wire energy meter?
what is two point starter?
what are the range of memory address in plc for L&T lx7 4A
