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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?
example
Determine the maximum power: 1 For the circuit shown below, what value of RL will result in maximum power transfer? Determine the maximum power dissipated in RL. You
Q. What are the various tones used in stronger telephony? When called party line is obtained, exchange control equipment transmits out the ringing current to telephone set of t
Explain Overhead Lines and Transformers? Overhead lines absorb reactive power when fully loaded. A line with a current I A, a line reactance of X L ?/phase absorbs I 2 X L V
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I''m trying to design ADC using MAX1198 and DAC using IDAC in Multisim 12 but none of them are working. I need some help in this regard
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Question 1: Planning is one of the primary functions of management. (a) Explain the importance of planning in an organisation. (b) How can managers develop an effective a
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