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No. 6 AWG copper wire has an area of 13.30mm2 and the resistivity at 200C is 1.75 x10-6 ohm-cm. Determine the length of No. 6 copper wireof the same temperature to give a resistance of 0.12 ohm.
Adding dopants to a sample of silicon is found to reduce the Hall coefficient by a factor of 10 and increase the conductivity by a factor of 5. What effect has this dopant addition had on the mean free path
A signal x(t) can be represented as x(t)=xe(t)+xo(t) where xe(t)=(1/2){x(t)+x(-t)} is the even part, and xo(t)=(1/2){x(t)-x(-t)} is the odd part of the signal. Let x(t) be an energy signal with an energy of 20 Joules. Suppose the even part of x(t) is..
A cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 152°C. (a) What is the average kinetic energy of each type of molecule. J/molecule (b) What is the rms speed of each type of molecule.
A tidal energy system has an average tidal range of 5 m and a basin area of 21.5km^2. The system is designed to generate power during both incoming and outgoing tides. The seawater density 1025kg/m^3, and the tidal period is about 12.5 hours.
A sinusoidal modulating waveform of amplitude 4V and frequency 1 kHz is applied to an FM exciter that has a modulator gain of 50 Hz/V. What is the peak frequency deviation. What is the modulation index
at no load and rated volatge, the speed is 1200rom, and the armature curnt is 3ampere. at fullload and rated volatge ,the line curent is 47 ampere and bcuz of aarmature reaction the fluc is 4% less that its no load value 1) what is the full no loa..
If a circuit has a 3.9 k ohms resistor and a 5 uF capacitor, find the current flow in the circuit at 0.005 seconds, if the maximum current flow in the circuit is 1.5 mA.
A solenoid consists of 400 turns per meter and carries a currentof .45 Amperes. A 20 turn coil is wrapped tightly around thecircumference of the solenoid. The ends of the solenoid areconnected to a 2 Ohm resistor.
A single-phase load is supplied with a sinusoidal voltage v(t) = 200 cos(377t) The resulting instantaneous power isp(t) = 800 + 1000 cos(754t ¡ 36:87±) (a) Find the complex power supplied to the load.
If the total power amplification through the receiver stages is G_R find the output power of the receiver. If the noise power at the output is identical to the noise power at the input of the receiver, find the NF for the receiver.
A 3-phase motor has coils wchich can be configured in a Y load. If each load phase has an impedance of 8+j6 ohms determine the power taken by the motor when supplied by a balanced 3-phase voltage source of 440V line to line.
A modulator transmits symbols, each of which has 64 different possible states, 15,000 times per second. Calculate the baud rate and the bit rate.
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