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Q. The flux in a magnetic core is alternating sinusoidally at a frequency of 500 Hz. The maximum flux density is 1 T. The eddy-current loss then amounts to 15W. Compute the eddy-current loss in this core when the frequency is 750 Hz and the maximum flux density is 0.8 T.
NPN BJT with forward-biased: An NPN transistor can be referred as two diodes along with a shared anode. In common operation, the base-emitter junction is forward biased and th
Q. (a) Consider a diode circuit with RC load as shown in Figure. With the switch closed at t = 0 and with the initial condition at t = 0 that vC = 0, obtain the functional forms of
Write explanatory notes on Hard disk drive controller. Hard disk drive controller: It converts instructions from software running upon the computer to the electrical signals
You are expected to do the experimentation on digital electronics and realize the result...
A synchronous motor has the following parameters per phase. E=2kv, Eo=5kv, X2=3ohms, and I=700amps. Draw the phasor diagram and determine (a) power angle delta, (b) active po
Q. With a direct current of I A, the power expended as heat in a resistor of Ris constant, independent of time, and equal to I 2 R. Consider Problem and find in each case the effe
Q. Explain the working of LEDs OPTOELECTRONIC devices either produce light or use light in their operation. The first of these, the light-emitting diode (LED), was developed to
The free electron theory of metals was first proposed by Drude and later improved by Lorentz. The main postulates of this theory are 1. All metal contain, adequate number
The armature of a four-pole dcmachine has a simplex lap wound commutator winding (which has the number of parallel paths equal to the number of poles) with 120 two-turn coils. If t
Q. Explain Multiplexing Systems? A multiplexing system is one in which two or more signals are transmitted jointly over the same transmission channel. There are two commonly us
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