Answer Posted / simon
Reactive Power OPPOSES Active Power another name is Back E.M.F OR Eddy Current.The result is low Pf &over draw of V,I.
Is This Answer Correct ? | 0 Yes | 3 No |
Post New Answer View All Answers
I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer
what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?
Briefly define and explain the following different types of Pulse Amplitude Modulation (PAM) with some examples. i) 2-PAM ii) 4-PAM iii) 8-PAM iv) 16-PAM v) Quadrature Amplitude Modulation (QAM)
8. A DYNAMOMETER TYPE WATTMETER RESPONDS TO THE.......
Why does curving the pole faces in a dc machine contributes to a smoother dc output voltage from it?
i want wipro vlsi placement pattern please send me
what is PID control in VFD drives?
Differentiate between ideal and non-ideal voltage sources?
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.
For an induction motor wat is the loading/unloading cycle duration or interms of L/UL ratio/ percentage?
I had applied for JE in PSEB, Can you pls send me the Question bank for related to my field
What is the difference between a verilog task and a verilog function?
Pl. give me checklist for installation & commissioning of machine tool.
Explain in brief description about the operation of DG sets.
How to calculate that clean water supply in one Day from 150 KLD STP?