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The per-phase synchronous reactance of a three-phase, wye-connected, 2.5-MVA, 6.6-kV, 60-Hz turboalternator is 10. Neglect the armature resistance and saturation. Calculate the voltage regulation when the generator is operating at full load with (a) 0.8 power factor lagging, and (b) 0.8 power factor leading.
(a) Consider a 5-µH inductor to which a current source i(t) is attached, as shown in Figure (b). Sketch the inductor voltage and stored energy as a function of time. (b) Let a v
Q. A balanced electrical industrial plant load of 9.8 MW with 0.8 lagging power factor is supplied by a three-phase 60-Hz system having a maximum rating (load-carrying capacity) of
Visual Presentation of an Electrical Network: The second layer corresponds to the distribution network coverage. The low voltage system and customer supply points along with l
3-Phase 4 Wire Meters with CT and MD If load is commonly more than 50 A, CT operated meters should be used. It is to be remembered that CTs should be properly selected for acc
The frequency domain representation of a signal is shown below: i. What are the fundamental frequency and the corresponding period of this signal (shown in Figure )? ii. Pl
Electricity beyond doubt is very useful and essential for us; but if dealt with carelessly, it can prove to be very fatal. It is compulsory for a laboratory assistant to be sure of
Thermal considerations: At continuous current, the voltage across the emitter-base junction V BE of a bipolar transistor get decreases 2 mV (silicon) and 1.8mV (germanium) fo
Strategy and Customer Relationship Management CRM sometimes considers as only information technology because of availability of quite a good number of software packages in the
How much would it cost for the following?
Semiconductor Equations The semiconductor equations that are relating these variables are shown below: Carrier density: n = n i exp (E FN - E i / KT) (1)
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