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Q. Explain about Rotating Machines?
Themost widely used electromechanical device is a rotatingmachine, which utilizes themagnetic field to store energy. The main purpose of most rotating machines is to convert electromechanical energy, i.e., to convert energy between electrical andmechanical systems, either for electric power generation (as in generators or sources) or for the production of mechanical power to perform useful tasks (as inmotors or sinks).Rotatingmachines range in size and capacity fromsmallmotors that consume only a fraction of a watt to large generators that produce several hundredmegawatts. In spite of the wide variety of types, sizes, andmethods of construction, all suchmachines operate on the same principle, namely, the tendency of two magnets to align themselves.
Most space is devoted to induction, synchronous, and direct-current machines. In spite of the distinguishing features peculiar to each class of machines, there are several striking similarities among the main kinds of machines.
A single phase line has an impedance of 8.4 + j11.2 ?. The line feeds a load consisting of a resistor and an inductor connected in parallel as shown in Figure 1. The load is absorb
Sign flag Since D 7 bit in the results is 0sign flag is reset. This also shown that the results is positive.
bias compensation techniques for ac and dc characteristics
Explain Stator of a Synchronous Machine? The stator of a synchronous machine is made of thin laminations of highly permeable (silicon) steel in order to reduce the core losses.
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Q. Explain Fourier Series? The phasor method of circuit analysis can be extended (by using the principle of superposition) to find the response in linear systems due to nonsinu
A 3-phase, wye-connected, 11.8 kV, 100 MVA turbo- generator of 0.8 power factor lagging has a synchronous reactance of 2.0 p.u. on rating. The generator is driven by a steam turbin
Time constant Time constant, defines as time for current achieve maximum (IM) if this maintain the early promotion rate current.
Q. In the circuit shown in Figure, use the ideal op-amp technique to find: (a) v o as a function of v i . (b) The voltage at A.
Ballistic galvanometer
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