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The magnetic circuit shown in Fig. P.2.8 has a coil of 500 turns wound on the central limb which has an air-gap of 1 mm. The magnetic path from A to B via each outer limb is 100 cm and via the central limb 25 cm (airgap length excluded). The cross-sectional area of the central limb is 5 cm × 3 cm and that each outer limb is 2.5 cm × 3 cm. A current of 0.5 A in the coil produces an air-gap flux of 0.35 mWb. Find the relative permeability of the medium.
A thyristor is triggered by a pulse of train of 5kHz.The duty ratio of the pulse train are 0.5. If allowable average gate power is 100W, calculate the maximum allowable gate drive power.
Calculate the threshold voltage for the circuit. Assume the maximum output voltage swing of the op-amp is ± 3 V for when the supply is it ± 5 V.
Find the PSD of the received signal if v is uniformly distributed. - what does the Doppler effect do to the PSD of the sinusoidal signal.
consider a signal xt 10 cos2pifct 4 cos 2pifmt. assume frequency modulation. the message frequency fm 23 khz.
part-1q 1. for the circuit shown determineathe time constant when the switch moves to position 1bthe mathematical
What are the principal tools and technologies for accessing information from databases to improve business performance and decision making?
An 40-kW induction motor, with a lagging power factor of 0.76, is supplied by a 120-V rms 60-Hz sinusoidal voltage source. Find the capacitance needed in parallel with the motor to raise the power factor to:
In a certain transistor amplifier circuit, the transistor can be represented by a 10 mA current source, as shown in Figure 31. In a certain transistor amplifier, two transistors act in parallel. How much current is there through the resistor RE?
Compare and contrast Du Bois's theory as to the oppression of African Americans with Gilman's theory as to the oppression of women. What similarities do you see in their arguments? What are the differences in these two theories of oppression?
A box of mass 20kg is slid down a ramp inclined at 20 degree with an initial speed of 5 m/s. If the box stops after 10 m, what was the coefficient of kinetic friction between the box and the ramp
Determine the quiescent values IDQ1 and IC Q2. - Find the small-signal voltage gain Av = vo/vi . - Determine the small-signal output resistance Rof .
Assume Vcc = 15 and Vee = -15 volts. How stable will the collector voltages be for changes of transistor (all 2N3904), and for temperatures from 0°C to 75°C? Is this a stable biasing scheme and are the resistor values suitable
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