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Q. Two balanced, three-phase, wye-connected loads are in parallel across a balanced three-phase supply. Load 1 draws a current of 20 A at 0.8 power factor leading, and load 2 draws a current of 30 A at 0.8 power factor lagging. For the combined load compute:
(a) The current taken from the supply and the supply power factor.
(b) The total real power in kW supplied by the source, if the supply voltage is 400 V.
what is the effect of back emf ?
What are the basic modes of operation of 8255? There are two basic modes of operation of 8255, viz. 1. I/O mode. 3. BSR mode. In I/O mode, the 8255 ports work as progr
4GLs (Fourth Generations Languages) These are called non procedural languages May be considered as advanced HLL. Objects oriented programming languages and language with
The small electronics consultancy company that you work for has been commissioned to design a portable mixed signal heart rate monitor unit for the National Health Service. You hav
Q. An 8-bit A/D converter is driven by a 1-MHz clock. Estimate the maximum conversion time if: (a) It is a counter-controlled A/D converter. (b) It is a successive-approximat
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Q. A two-pole rotating machine with a singly excited magnetic field system as its stator and a rotor (that carries no coil) has a stator-coil inductance that can be approximated by
define all the symbols with their unit
Discuss the term D/A conversion. D/A conversion: Digital-to-analog or analog-to-digital conversions are two very significant aspects of digital data processing. Digital-to-
The aim of this project is to design, construct and build a motorised base driven by two small dc motors. The motor drives are two H-bridges. The switching devices in these bridges
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