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Q. A 75-kVA transformer has an iron loss of 1 kW and a full-load copper loss of 1 kW. If the transformer operates on the following load cycle, determine the all-day efficiency:
8 hours full load at unity power factor
8 hours no load
8 hours one-half full load at unity power factor
Magnetic materials
Q. Consider an elementary three-phase, four-pole alternator with a wye-connected armature winding, consisting of full-pitch concentrated coils. Each phase coil has three turns,
Definition of Magnetism Magnetism is explained as the force produced by charge particles (electrons) of magnet. A magnet is a material that obtained a magnetic field.
Why do wenot see the battery and capacitor combination for power backup? Ans) There are "super capacitors" that are used for power backup - they are well-organized for short-te
what can I do to sharpen the roll off and flatten the passband of a finite impulse response filter
Q. Explain the fixed bias circuit? The Fig refers to the common emitter collector characteristics and the ac and dc load lines.The Fig shows the points Q 1 and Q 2
Q. What do you understand by Analog to Digital conversion? What do you understand by A/D conversion? Give an explanation of any one of the following A/D techniques: (i) Su
Q. Afixed-biasmethod is illustrated in Figure. Assuming ICBO to be small compared to I BQ and I CQ , find RB such that the operating point corresponds to I CQ = 14 mA, V CEQ = 7
Give the alternate functions for the port pins of port3? RD - Read data control output. WR - Write data control output. T1 - Timer / Counter1 external input or test pin.
Draw a diagram of ultrasonic Machine and illustrate its important parts? Discuss the following important element of ultrasonic process. (i) Abrasive slurry. (ii) Work Mate
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