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A current I = 20 <30deg A flows through an impedance Z = 40 <-22deg Ω. Find the apparent power delivered to the impedance.
A 110 V rms, 60 Hz source is applied to a load impedance Z. The apparent power entering the load is 120 VA at a lagging power factor of 0.707. Calculate the reactive power in the load.
A current I = 15√2 <30deg A flows through an impedance Z = 100 - j50 Ω. Find the time average power delivered to the impedance.
An AC motor with impedance Z = 4.2 + j3.6 Ω is supplied by a 220 V, 60 Hz source. Determine the reactive power delivered to the load.
The phasor voltage across a certain load is V = 1200√2 <-120deg V, and the load impedance is Z = 40 - j30 Ω. Determine the power factor and state whether it is lagging or leading.
1. What is the purpose of core in hollow solder wire 2. What is tinning, and why is it important 3. Why is safety so important when soldering 4. Why has lead-free solder replaced lead-based solder Be
Assuming that the feed point impedance of the complementary 0.475 l dipole is 70 + j0 ohms if it were fed in the center, calculate the distance Zf to use to obtain Zs = 50W for a signal frequency f
Sketch magnitude and phase responses (as linear gain versus digital frequencies) for each filter (use [0,π]). Indicate filter type. Find cutoff frequencies if sampling frequency in 30 kHz. Use 6
Design a suitable amplifier using a combination of these stages. Your design should utilize the minimum number of stages and should ensure that the signal level is not reduced below 10 mV at any poi
Explain why a PID controller is not a good idea for this process. Use Matlab to design a PD controller for this process. Repeat the design, but this time use a lead-lag compensation network to cance
a zener diode exhibits a constant voltage of 5.6 volts for currents greater than five times the knee current.Izk is specified to be 1 ma. the zener is to be used in the design of a shunt regulator f
There are to be 15 states, and the device for utilization is a 22v10 chip using 8 flip flops internal to the device. The outputs are 8 LEDs and a secondary output Z that is a 1 if states 10,11,12,13
Current on the surface of inner conductor is 4I going into the page (positive current flows into the page) or is in negative z direction while current on outer conductor surface is 2I in the reverse
Given: A 13.8 kV circuit has a load of 6000 kVA with a lagging power factor of 0.8. Required: How much capacitive reactive power is needed to correct the power factor to 0.92 lagging
During four consecutive clock pulses, a sequence of four values of the w is applied. Derive a state table for the FSM that produces z = 1 when it detects that either the sequence w: 0010 or w: 1110
A Three phase thyristor converter, VLL=460V (rms) at 60 Hz, and Ls=5mH, the firing angle "a " is 30 degrees electrical, the converter is consuming 5Kw, the DC current is assumed to be constant.
suppose that another FM station is in the vicinity is broadcasting at 98.1 MHz. determine the relative value of the voltage across the resonant circuit at this frequency compared with that at 98 MHz
Create 2 equations with 2 unknown variables. For example, one equation would be ax + by = c and the other equation would be dx + ey = f where x and y are the variables and a, b, d, and e are coeffic
a. A point is equally likely to fall anywhere on the semi-circle defined by the equations, x^2+y^2=1, y>=0. Find the pdf of the y-component of the point's position. b. A point is equally likely t
Make a plot of group velocity versus frequency for frequencies from 0 Hz to 500 kHz. Your plot should have 3 different curves for the three modes of propagation. Be sure to identify the modes and al
An angle-modulated signal with carrier frequency ???ωc=2πx106 is described by the equation φEM(t) =10cos(ωct +0.1sin200πt) (a) find the power of the modulated signal. (b) find th
The mobile phone used has effective area of 3m^2 and good signal reception required receiving power of 1mW. -Calculate the receiving power of mobile phone A and mobile phone B. -Which mobile phone has
A student project requires a 6 V DC power supply that can source 300 mA. The batteries for the power supply must last for a minimum of 8 hours of continuous operation. NiMH rechargeable batteries in
Estimate the area in terms of number of 1-bit full-adders and additional 2-input logic gates. For performance, use the timing analysis tool provided in the Xilinx Tools as follows: In the Process Wi
If wind power at this site varies as the ratio of heights raised to the 1/7 power, compute the ratio of power in the wind that appears at the tip of the top blade relative to the power that appears