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1.) A three phase, D0 HP, 1765 rpm, BA0 V induction motor operating at three quarter load has an efficiency of 91% and a power factor of 87%. Determine active power, apparent power, reactive power and line current.
2.) Determine the rated primary and secondary currents and the approximate short circuit currents for a three phase A3,000-B80 V, 250 kVA transformer with a D% impedance. What is the ohmic impedance on the secondary side of the transformer?
3.) A 240 V center-tap transformer serves the following loads:
a. 2 - A500 W at 240Vb. 1 - C200 W at 120 Vc. 1 - D000 W at 240 Vd. 4 - 1500 W at 120What are the two line currents and neutral current when balanced as closely as possible? What is the maximum neutral current?
4.) A three phase 480 V source supplies a B00 kW load and B00 kVAR capacitor at unity power factor. What is the power factor of the load without the capacitor?
Voltage divider bias: The voltage divider is made by using external resistors R 1 and R 2 . The voltage beyond than R 2 forward biases the emitter junction. Via prop
Q. Discuss the closed-loop behavior? Consider an elementary feedback control system, as shown in Figure, with H = 1. The output variable c and the input e to the direct transmi
explain how microwave intergrated circuits differ from conventional intergrated circuit stating the technologies
Bus Organisation Set of communication lines in microprocessor which carry bits from microprocessor to peripherals ( memory inputs ports output ports and other chips
Normal 0 false false false EN-IN X-NONE X-NONE MOTOR CONTROL
We commissioned a 'bad practice exemplar' by asking Plexus to modify a good design (provided by Valor) to demonstrate the most likely kinds of faults in each of the areas Design fo
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Q. What do you mean by Insurance? This is done by creating a common fund out of the contribution (known as premium) from several persons who are equally exposed to the same los
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Define Time and Shift Invariant? Time and shift invariant means that the system characteristics and shift do not change with time, i.e. the system output is independent of the
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