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Answer Posted / nitin
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should %impedance be high or low in a power transformer? if so why?
What is control system?
What is the unit of attenuation?
why the perameters of secondary circuit are more important then that of the primary circuit of induction motor?
which is chemical used as in ro water what is difference betweeen multi grade filter&dual media filter
What are steps to be taken while designing of DYN11 distribution transformer to achieve magnetising balance?
What is the distance between each insulator in 33kv transformer and how can it calculate
how is working bearing heater?
Why is a synchronous motor always star connected??
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.
Dear all: Recently we got a question about Interface between PMS and SAP-PM.once we got a update message from PMS.we should set the deletional flag for functional location in SAP system.Is there any FM or BAPI to use?There are only functional location create and change provided by SAP. Best regards!
what is reactive power?, why its measured in VA ? is it transient behavior of system?
How can maintain our H.T. motors used in cement plant. please send me procedure.
While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?
nwhat are the main Components of servo motor?
