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A copper conductor has a rectangular cross section of 0.5 × 2 cm.
a. What is the dc resistance per meter of the conductor?
b. What is the resistance per meter at 10 MHz?
A photoelectric surface has a work function of 4eV. What is the maximum velocity of the photoelectrons emitted by light if frequency 10^15 Hz incident on the surface h = 6.6 * 10^-34 Joules-second e = 1.6 * 10^-19 Coulomb
The four alkaline battery cells store a total of 200watt-seconds of energy. If the cassette player is drawing a constant 10mA from the battery pack, how long will the cassette operate at normal power
1 list and describe the three type o transformer 2 describe the relationship between the turns ratio of a transformer and its input output voltages 3 berifly explain the forward and reverse operation of half wave rectifier
give the definition of electrical circuit. draw the simplest electrical circuit and mark the directions of electrical values in it and ohms law. what are the main and the additional elements of the electrical circuit and that are the purpose.
A three phase ac machine with sinusoidally distributed windings has a 3-phase inductance, Lm = 40 mH . Balanced three phase voltages are applied to the stator with line-line voltage,VLL = 208V ( RMS ) , at 50 Hz.
Study code acquisition in frequncy hopping spread spectrum communication systems.Describe and explain why it is necessary. Design and demonstrate a code acqusition method.
The addition of a 20-kvar capacitor bank improved the power factor of a certain load to 0.90 lagging. Determine the complex power before the addition of the capacitors, if the final apparent power is 185 kVA.
An IPv4 datagram has arrived with the following information in the header (in hexadecimal): Ox45 00 00 54 00 03 58 50 20 06 00 00 7C 4E 03 02 B4 OE OF 02 a. Is the packet corrupted b. Are there any options
A police K-band radar is operating, with transmit power of 1000 Watts and antenna gain of 300 in linear units. The radar unit is designed to detect a target with a radar cross-section (RCS) of 6 sq. meters and its receiver can detect a signal
Audio amplifiers use transformer coupling between the final amplifier stage and a speaker to match impedances and in order to avoid having DC current of the final stage flow through the speaker coil. We wish to connect an 8 Ω speaker to an 8000 Ω ..
What is the corresponding uncorrupt hamming code?
A 3-phase, 440VAC, 6-pole, 60Hz, wye connected induction motor takes 30KVA at .8 power factor lagging, and runs at a slip of 3.5% at full load. The stator copper losses are 500W, and the rotational losses are 350W.
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