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A 150 mH inductor of resistance 50 Ω is connected to a 50 V d.c. supply. Determine
(a) the initial rate of change of current,
(b) the final steady current, and
(c) the time taken for the current to change from zero to its final steady value.
Calculate the current, power factor and torque developed, when the excitation emf lags the busbar voltage by 15°, 25°, and 35° (elect).
A new type of Schottky diode is optimized for low-voltage applications. It has typical forward voltage drop of 0.2 V, but its leakage current can be as high as 80 mA. It is being considered for a 12 V to 2.5 V converter with 50 W load.
The intelligence signal amplitude is 3 V. Determine the carrier frequency and intelligence signal frequency. If the output deviation changes to between 90.0015 and 89.9985 MHz, calculate the intelligence signal amplitude.
A part hollow non conducting sphere has a uniform volume charge density of 200 nC/m2. Find the potential difference between the inner surface at r=2cm and outer surface at r=5cm
Calculate the PMOS device with to acheive symmetric propagation delays in an inverter (tPLH = tPHL). Use Wn=450nm Ln =300nm and Lp=300nm and solve for Wp. So I think by some ratio I can find what Wp should be, maybe something like Wn/Ln=Wn/Lp
A three phase abc sequence wye connected source with Van=220
What is the phase difference in a circuit with 100V,drawing 0.5 amps, consuming 50 Watts
An autotransformer with a total of 600 turns has its secondary winding embracing 200 turns. The 600 turns are connectred to a 60Hz, 2400V driving voltage. A load connected to the secondary draws 4.8kVA at 0.6 power factor lagging.
A parallel RLC with R = 50kΩ and C = 32nF is connected toan ideal 5 mA current source, and is observed to be resonant atω = 50x103 rad/s. Determine the value of L and the circuitQ (quality factor) at resonance.
Derive the expression for the equilibrium concentration of holes/cm^3 in the valence band, p0, starting with the density of states in the valence band and the Fermi-Dirac distribution.
A point charge Q is located at (0,0,d) above an infiniteconducting plane that lies in the xy-plane and is maintained atground potential. Find a) the surface charge density as a functionof x and y on the conducting plane
At t=40s, the capacitor is disconnected from the charging circuit and connected in parallel with a 5- Mega ohm resistor. Determine the voltage across the capacitor at t=40s and at t=100s.
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