Answer Posted / sheikh
firstly you should know that what is rated current of
50kw.motor and relay can be adjusted twice of rated current.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
WHAT IS MEANING OF Gg & Gg IN hrc FUSE
what is there inside an inverter and how it works?
which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor?
WHaT IS THE CONCEPT OF INDUCTION LAMPS IN MODERN LIGHTINGS, and HOW IT WORKS TO EMIT LIGHT ( AS NO ELECTRODES ARE PRESENT ) ?" COULD INDUCTION LAMPS CAUSE INTERFERENCE WITH COMUNICATIONS INTO A STORE USING INDUCTION LIGHTING ? WHAT IS THE BENEFIT OF USING THE LOW FREQENCY INDUCTION LAMP , VERSUS LED , AND VERSUS FLUORESCENT, AND VERSUS ANOTHER KIND OF LIGHTING . THANK yOU MOISES GUINDI
what is high and low cut off voltage of BB and DG at SPS????????
why 5kW motor becomes unbalance if its relay trip 1st time and its set value is 7.0 A
If there is major % of Voltage harmonics in the system, how can it be control or reduced?
what is meant by carrier aided trip protection in transmission line
What is the main purpose of c.f.b.c.boiler
why Lightning arrestor are made by 2 seperate stack of inslutor but why cvt are in single stack of insulator.
what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field
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.
What is the formula to calculate the rating of a three phase miniature circuit breaker
How to calculate the no of Ceiling fan (1200mm sweep) per unit area?
what could be the RMS value and average value of a 4 phase sine wave?
