Interested to Buy Any Domain ? << Click Here >> for more details...
In a company has been installed an analog amperemeter, this
company was suplied by generator X, there is no problem in
the ampere meter, rigth now this company's supplied by
generator Y then the pointer in amperemeter vibrating. What
happened? Why?
Thank's
- 2 Answers
- 4286 Views
- I also Faced
- E-Mail Answers
Answer Posted / abdul karim
Recheck the supply of gen x , and if AC power supply check the frequency of both , it must be same .
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
- two pumps must work with them at the same time but if the first pump start the second pump must delayed for some time to start also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it
HOW TO CALCULATE HV CABLE SIZING?
what heppend if we are connected u1-v1-w1 as a star point in the place of u2-v2-w2 in power genration
HOW TO CALCULATE EARTHING SIZING?
please send me jindal previous aptitude and technical question and answer.my email id is deep_raj@live.com
HOW TO CALCULATE THE VT SIZING?
What is principle of Floroscent tube 36watt.
What is acsr cable and where we use it?
Why electrical power generation and transmission done in 3 phase system not more than 3 phase ?
Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.
what is RFCT and Insulgard Relay & It's function?
What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.
wht is embedded systems? what is new inthis field?
What is Diff btw Fire Alarm & VESDA System???
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.
