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Compute the complex power S (in polar form) drawn by a certain load if it is known that (a) it draws 100 Waverage power at a lagging PF of 0.75; (b) it draws a current I = 9 + j5 A rms when connected to the voltage 120/32 V rms; (c) it draws 1000 Waverage power and 10 VAR reactive power at a leading PF; (d) it draws an apparent power of 450 Wat a lagging PF of 0.65.
In each of the three phases in a balanced delta- connected load is composed of a 10mF capacitor in parellel with a series-connected 470 ohm resistor and 4mH inductor combination, assume a phase voltage of 400 V at 50 Hz
What will cause latch-up in a CMOS IC. What might happen in this condition. What precaution should be taken to prevent latch-up.
An array is defined as: ARRAY DB 2 DUP(5,2,2 DUP(4,7),6) The location of ARRAY is at 500H and DS = 0 Select an instruction to read the third copy of 4. Select one: a. MOV AL,ARRAY[SI] :where SI=10 b. MOV BL,[500] c. None of the answers. d. MOV [BX+SI..
A 10 uH inductor is connected to a circuit such that prior to t = 0 the current through the inductor is 10 mA. After t = 0 the current through the inductor is iL(t) = 10e^(-1000t) mA where t is time in seconds. a) Determine the expression for indu..
In doing so, they learned through laboratory studies that the maximum growth rate of the bacteria will be 0.66 day -1 and that the half-saturation constant will be 64.5 mg L-1.
A cable technician tested the signal-to-noise ratio on the curb as 20 dBm. This means, if the noise power is at 1 mW, then the signal power should be 20 dB higher then that. If the noise power is 20 mW
The serial ports on two computers which use binary signaling are connected by a twisted pair cable. The cable has a flat frequency response up to 120KHz, with negligible group delay distortion. That is, the bandwidth of the cable is 120KHz.
A 2722-kg weight is being pushed up an inclined surface at constant speed by a cylinder. The coefficient of friction between the weight and inclined surface equals 0.15. for a pressure of 6.9 MPa, determine the required cylinder diameter.
Compute the inverse Fourier transform for X(ω) = cos 4ω. 5. A signal with the highest frequency component at 10 kHz is to be sampled. To reconstruct the signal, the sampling must be done at a minimum frequency of?
The transfer function of a particular active low pass filter is G(s) = 200/[s(1+0.4s)(1+0.1s)]. a) At a frequency of 1.0Hz it is determined that the gain of this filter in dB b) Find the phase shift in degrees through the filter as the frequency appr..
1) For a forwarard converter, derive the minimum value of Vr - as a function of the input voltage Vg, the duty cycle D, and the turns ratio N1/N2 - that will cause the transformer magnetizing current to be reset to zero by the end of the switching..
An OFDM system employs 260 data subcarriers, 40 pilot subcarriers, and 34 guard subcarriers to transmit data through a wireless channel. QPSK modulation is employed for each subcarrier.
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