Answer / uday

stator and rotar

Answer / satya dev ( knight frank)

Main Parts- Stator,Rotor, Diode, windings, Pick up unit
Safety parts- AVR, CTs & PTs,
Movable Parts- Shaft,Cooling wheel,

Answer / hemachandra.m

STATOR, ROTOR, AND EXCITER ALSO

Can I use RCCB in moisture control device in a submersible pump.

2 Answers   TATA,

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can some one clearly explain why -48 volt DC use in telecom site????

0 Answers  

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what is the formular for the calculation of CT'S when installed as part of a electrical installation so the correct meter is used

2 Answers  

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Generator,motor and alternator Working principal Please explain easily

0 Answers  

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When we use PT in HT Panel why the ratio is 11Kv/√3/110v/√3 please explain briefly with suitable formula?

1 Answers  

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what is wave traps and why it is been used in switchyards?

1 Answers   NHPC,

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What are the main factors to be considered(In terms of energy conservation) while selecting a new air compressor?

1 Answers  

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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 0for 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.

0 Answers  

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how i define power factor when some one ask me ,,,,,what is power factor ,,,,,pleas define it simple. (pleas dont use these worlds ,,the difrence bitween apparent power and actual power is power facter )

1 Answers  

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In pakistan appliances work on 220v at 50hz and in us appliances work on 110v at 60hz what is basic theory to explain it

1 Answers   SNGPL,

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What will be the output of an alternator ,if the field current is single phase ac supply.

1 Answers   DRDO,

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how can calculate static 3phase 4wire CT & PT operated energy meter constant when calibrating using refference meter suppose we have 11kv/110v PT and 30/5A CT, the meter constant is 160imp/kwh, where meter is showing MW energy? give me solution which constant i feed in my refference meter for calibration of energy meter?

3 Answers  

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