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Two three-phase, 6.6-kV, wye-connected synchronous generators, operating in parallel, supply a load of 3000 kWat 0.8 power factor lagging. The synchronous impedance per phase ofmachine A is 0.5 + j10 , and of machine B it is 0.4 + j12. The excitation of machine A is adjusted so that it delivers 150 A at a lagging power factor, and the governors are set such that the load is shared equally between the two machines. Determine the armature current, power factor, excitation voltage, and power angle of each machine.
Illustrate Common Emitter configuration, current amplification factor and collector amplifier. Describe transistor as an amplifier.
The following four output displays of an oscilloscope (right hand side, below) show waveforms of a biased diode ac circuit. An example is illustrated on the left hand side. VIN is
what is 2 bit counter?
how it occurs?
design a 32:1 multiplexer using two 16:1 multiplexer
Q. Explain braking mode of rotating machines? The braking mode has both mechanical and electric energy input. The total input is dissipated as heat. The machine is driven by th
An oil-filled transformer has a c.m.r. of 500 kVA which allows it to run continuously in an ambient of 35°C with an oil temperature rise of 50°C. The transformer has a time constan
Q. The full-wave rectified waveform, approximated by the first three terms of its Fourier series, is given by v (ωt) = V m sin (ωt/2), for 0 ≤ ωt ≤ 2π, and where V m = 100
Q. Develop a schematic diagram of a system in which the D/A converter of Figure can be employed in a digital voltmeter.
distingish between maximum and minimum modes of operations of 8086 with timing diagrames
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