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Q. A two-pole rotating machine with a singly excited magnetic field system as its stator and a rotor (that carries no coil) has a stator-coil inductance that can be approximated by L(θ) = (0.02 - 0.04 cos 2θ - 0.03 cos 4θ) H, where θ is the angle between the stator-pole axis and the rotor axis. A current of 5 A (rms) at 60 Hz is passed through the coil, and the rotor is driven ata speed,which can be controlled, ofωm rad/s.
(a) Find the values of ωm at which the machine can develop average torque.
(b) At each of the speeds obtained in part (a), determine the maximum value of the average torque and the maximum mechanical power output.
(a) Give three different ways how electro-magnetic interference can be reduced in twisted pairs based transmission. (b) Noise are unwanted signals affecting transmission. Lis
The observations from these experiments led to 'The Laws of Electromagnetic Induction' 1) 'If the magnetic flux threading through an electrical circuit changes, then an e.m.f.
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I can,t connect a new subsystem of solar module with a capacitor and inductor why and how to solve
1) Assume that we are given the continuous-time signal xa (t) = xa1 (t) + xa2 (t) + xa3 (t), where, xa1 (t) = 2 + cos3 (2pf1 t + p 3 ) + 2 cos(2pf2 t), xa2 (t) = 2 cos(2pf3 t)
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Athree-phase,wye-connected, 220-V, 10-hp, 60- Hz, six-pole inductionmotor (using Figure 13.2.6 for notation) has the following parameters in ohms per phase referred to the stator:
Ask question (c) Reduce each of the given signal transmission situations to a source, coupling path(s), and receptor: (i) AM radio transmission to the human ear. (ii) TV transmis
Q. What are the applications of a R-C coupled amplifier. The R-C coupled amplifiers have excellent audio fidelity over a wide range of frequency. Therefore, they are widely use
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