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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.
controller
Q. What is Trans conductance? It is ratio of small change in drain current to the corresponding change in the gate-to-source voltage for a constant gate-to-source voltage .it i
The upper end of a hanging chain is fixed whereas the lower end is attached to a mass M. The (massless) links of the chain are ellipses with major axes and minor axes l+a and l-
Q. What are transistor amplifiers? What is meant by efficiency of an amplifier? What is amplifier coupling? The AMPLIFIER is a device that enables an input signal to control an
Consider a CS JFET amplifier with the following parameters : R 1 = 350 k; R 2 = 100 k, R SS = 1200 , R D = 900 , R L = 1000 , R S = 2000 , ro = 15 k,gm = 6 × 10 -3 S,
Q. Write short note on Common vs. associated channel signalling. Associated vs. Common channel signalling: Out band signalling suffers from very limited bandwidth. Both a
examples in building electric helicopter using cardboard, balsa wood, scotch tape, glue, binder clips, rubber bands, rubber stoppers, etc. attached to a 12v power supply
Q. The efficiency of a 400-kVA, single-phase, 60-Hz transformer is 98.77% when delivering full-load current at 0.8 power factor, and 99.13%with half rated current at unity power fa
Checking at Site - Testing of Meter The routine testing of meters should be carried out once in 3 years. Further, surprise checks should be conducted at the consumer's install
Define Spectrum of Real Signals? In the real world, we rarely come throughout a pure sine wave. Typical signals have a wide spectrum as displayed in the above diagram. Informat
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