Interested to Buy Any Domain ? << Click Here >> for more details...
what is skin effect? why is it absentin dc system
- 22 Answers
- 46150 Views
- I also Faced
- E-Mail Answers
Answer Posted / tigernitin87
4th ans is correct abt skin effect
ans of 2nd ques
R(ac)is proportional to sq. root of frequency
in dc f=0 so R(ac)=0
hence current is distributed uniformly
| Is This Answer Correct ? | 13 Yes | 0 No |
Post New Answer View All Answers
difference between main metering kiosk and check metering kiosk
how much allowable resistance that can be difference in motor all coils?
What would cause a 240v choke that should give 110v out on a 16w lamp to gradually increase to 160v?
What is difference between slip rings and carbon burushes?
why r we using shell transformer for low voltage
How to know the Max. current caring capacity of the cable by its size ?
There is air in a room . the top and bottom of the room are at constant temp. T1 and T2. DRAW THE temp profiles if a. T1 greater than T2 b. T1 less than T2
area control error
Refernce currents are to be generated using refernce cueernts how can this be done
How to calculate LT XLPE CABLE for 11 kv / 433 v , 1000 kva oil type transformer system?
how to test power transformer.YNd11
How relay works, reverse relay, master relay, os relay, earth fault relay and what is its setting point
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.
If we have to find the inductance of a dc shunt motor then by giving dc supply or ac supply and what is the reason for it. (this example is from "to determine the transfer function of a dc shunt motor ")
What is the voltage gain or transfer function of amplifier?
