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A coil with an impedence of 64.1 angle 51.4 degrees is connected in series with a resistance 22.5 ohms. The combination is supplied by 120 V source. Determine the coil and resistor voltages and the overall power factor. Draw the phasor diagram for these voltages.
Two machines and a lighting load are connected in parallel to a 240 V(rms), 60 Hz line. The first machine uses 230 kW of power at 0.85 power factor lagging. The second machine uses 95 kVA at 0.882 power factor leading. The lightening load consumes..
A circular loop TV antenna with 0.01 m2 area is in the presence of a uniform -amplitude 300 MHz signal. When oriented for maximum response, the loop develops an emf with a peak value of 20 mV. What is the peak magnitude of B of the incident wave?
The duration of a cellular call is an exponential random variable with expected value of 3 minutes. A subscriber makes 120 calls each month. Use the central limit theorem to estimate the probability that the subscriber uses at least 400 minutes.
When the starter motor, which draws 90A, is running the terminal voltage drops to 11V. What is the internal resistance of the battery What percentage of the chemical power is delivered to the starter motor
(a) Howmany 256M X 16 RAMchips are needed to provide amemory capacity of 8 GB (b) How many address lines are needed to address this memory (c) How many address lines need to go to each chip
A communications channel has a bandwidth of 2,000 Hz and a signal-to noise-ratio (SNR) of 20 dB. What is the maximum possible data rate
What should be the filter's passband cut-off frequency?(DSP Question).
A 480V, 60 Hz three phase induction motor has the following parameters: R1=R' 2= .3 ohms Xeq= 1 ohm Xc=600 ohms At full load, the motor speed is 1120 rpm, the rotational loss is 400W and the core loss is 1 kW.
A current element of length 1cm is located at (1m, 3m, 4m) in free space and carries a current of 20mA along ay. An infinitely long filamentary current of 12A along az passes through the coordinate origin (0,0).
a dsp system is given with the following specifications: design requirements: sampling rate 20,000 Hz Maximum allowable gain variation from 0 to 4,000 Hz = 2dB 40dB rejection at the frequency of 16000 Hz
An experiment consists of tossing a fair coin four times in succession. What are the possible outcomes Now count up the number of outcomes with three heads. If the outcomes are equally probable, what is the probability of three heads
A single-turn resonant circular loop with a /8 radius is made of copper wire with a wire radius of 10^4 pi f/2 and conductivity of 5.7 × 10^7S/m. For a frequency of 100 MHz, determine, assuming uniform current
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