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1) If A = 6 + j8 and B = 2-160° what is A x B in polar and rectangular form?
2) If A = 4 - j4 and B = 6120° what is A - B in polar and rectangular form?
3) What is the RMS voltage of the source in a single loop series circuit if Irms = 1A-30° and Ztotal = 100 65°?
4) What is the power dissipated by an electric heater with a resistance of 20? drawing a current waveform of i(t) = 10 sin(60t) Amps?
What is the memory layout of the 16-bit value, 0x7654 in a big-endian 16-bit machine.
sketch the spectrum
two loads connected in parallel are supplied from a single phase 240v rms source. the two loads draw a total real power of 400 kw at a power factor of 0.8 lagging. one of the loads draws 120 kw at a power factor of 0.96 leading.
Locate and specify an appropriate sensor if it is to operate at 120 vac as an input to a PLC. Create the ladder diagram program to accomplish the specified control.
Efficiency in a power transformer is 98.6 percent when loaded such that its copper losses are five times its core losses. Calculate the per unit resistance of this transformer.
a road between fairbanks and nome, alaska, will have a most likely construction cost of $4 million per mile. doubling this cost is considered to have a probability of 30%, and cutting it by 25% is considered to have a probability of 10%.
A control system is needed to control a small shopping center parking lot lighting system and the exterior lighting for the building. The design specifications require that the parking lot lighting and the exterior lighting turn on at dusk automat..
The angle of departure is defined as 180 degrees plus the phase angle of GH computed at the complex pole, but ignoring the contribution of that particular pole.
A Si PIN photodiode has an i-Si layer of width 20 µm. The p+ layer on the illumination side is very thin (0.1µm). The PIN is reverse biased by a voltage of 100 V and then illuminated with a very short optical pulse of wavelength 900 nm.
A tooling designer is designing a jig that will insert pins into the flip-up handles of a coffeemaker. The bin to hold the pins should hold enough pins for 3 hours' work before reloading. The engineering estimate for the rate of inserting the pins..
Show that the power in a three-phase, three-wire system with balanced loads is constant at every instant. Deduce an expression for the power in terms of the line voltage, line current, and the power-factor.
A signal is modulated by BPSK and transmitted over an AWGN channel. At the receiver, the bit error rate performance is 0.001
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