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In a p-n junction, if the doping concentration on then-side is larger than the doping concentration on the p-side, which side has a larger depletion width? Justify your answer
Water is being heated in a closed pan on top of a range while being stirred by a paddle
wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost
to the surrounding air. The paddle-wheel work amounts to 500 N · m. Determine the final
energy of the system if its initial energy is 10 kJ.
Y=1/2(3x^2+1)^2
A cable one mile long and 0.50 inch in diameter is composed of a steel core 0.25 inch in diameter and the
outside shell is aluminum. The resistance of the cable is _____ is Ps and Pa 57.4 and 17.5 ohm Cmil/ft,
respectively
Calculate vo(t) and show the phasor diagram of the currents in the given circuit.
a) Draw a block diagrams of the following:
- a 4-to-1 multiplexer.
- a 4-to-2 encoder.
How is the 4-to-2 encoder different from a 4-to-1 multiplexer?
A coil is wound with 300 turns over a stee ring of relative permeability 900 having a mean circumference of 400 mm and a cross-sectional area of 500 mm2 . If the coil has a resistance of 8Ω and is connected across a 20V dc supply, using a neat sketch, calculate:
a).The coil magneto-motive force
b).The magnetic field strength
c).The total flux
d).The reluctance of the ring
e).The permeance of the ring and
f).The flux density in the ring
A 162-MHz carrier is deviated by 12 KHz by a 2-KHz modulating signal. What is the modulation index?
An 8-ohm resistor is in series with an inductive coil and the combination is connected
across a 120 V, 60 Hz source. A voltmeter connected across the resistor reads 32 V and 104 when connected across the coil. Determine the resistance of the coil.
The ohmic resistance of a large magnetic contractor is measured to be 20 ohms. A 230 V is
impressed on the contractor and the current is taken as 3.2 A. Neglecting core loss, determine
the inductance of the contractor in mH?
