What is the full form of PSD & CSD ?
Answer Posted / vicky
Canteen Stre Department
| Is This Answer Correct ? | 1 Yes | 12 No |
Post New Answer View All Answers
when ID fan will immediately stop through VFD what exactly cause and problem the ID fan
how does high earth to neutral voltage affects electronic circuit?
Starting Time of LT & HT Motor
Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?
Details about Flux Compensated magnetic Amplifer starter for motors
what is package substation.how many types they have
What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?
What are the relays in ACB and VCB
exolain the star delta connection
what is the difference between 4pole & 6pole DC Motors & give advantage ?
what material is used in capaciter
Tell me in detail about c.t. And p.t. ?
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 current check gurd relay?
what is the function of choke in the flourcent tube lights and why the colour is in white mostly in flourcent tube lights