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A house at 42 degree north latitude has a roof that faces due south, and is elevated to an angle of 23 degree. A solar panel is mounted to the roof. what is the angle of incidence between the sun and the array at 10 am on May 5th?
A 15 hp, 209V,three-phase,six pole, Y-connected induction motor has the following parameter values per phase: R1= 0.128 ohm, R'2=0.0935 ohm Xeq- X1 + X'2 = 0.49 ohm. The motor slip at full load is 3%, and the efficiency id 90%.
Obtain polar plot using nyquist command. determine the stability of closed loop system based on nyquist criterion. design a compensator to meet the P.O. = 10%. Plot the before and after plot on the same nyquist plot.
A rifle fires a 1.20 x 10-2-kg pellet straight upward, because the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 6.74 x 10-2 m from its unstrained length.
The output/ input of a system is 30dB. detrmine the ratio Express x(t)=4*cos(100*t-45)+ 2*cos(250*t+30) in terms of exponential functions Then Detrmine the phase angles(in degrees) of the two frequency components of x(t).
A three-phase, 400 V system has the following load connected in delta: between the red and yellow lines, a non-reactive resistor of 100; between the yellow and blue lines, a coil having a reactance of 60 and negligible resistance
using 1/(s+2)(s+4) + c find when the poles are repeated and use that value to calculate the impulse response using laplace transforms. Calculate the step response when c = 10 using Laplace transforms.
a) Write the real-time expressions in the z=0 plane. What kind of polarization exists here Is is clockwise or counterclockwise (looking along +z) b) Find the expression for the accompanying H(z) field.
Design a high-pass op amp filter with a high-frequency gain of -100 and a cutoff frequency of 1kHz. Resistors with values of 1kohm, 10khom, and 100kohm are available. Determine the capacitance and resistance values of the filter.
Water is flowing through a 0.1 m diameter pipe at a velocity of 2.5 m/s. what diameter pipe will it need to transition into to decelerate to 0.5 m/s
a) At what time t1/2 have half the atoms decayed b) How many atoms have decayed at t = 40 ns c) Draw a graph of Nexc as a function of time. Show in the graph the lifetime, 1t1/2, 2t1/2, 3t1/2 and 4t1/2.
In a swamped common-emitter BJT amplifier, as shown below, if Vcc = 12 V, R1 = 8.2 k , R2 = 10 k , Rc = 500 , RE = 1 k , VBE = 0.7 V, and = 100, what is the transistor's emitter current
In a magnetic storage device, three attempts are made to read data before an error recovery procedure that repostions the magnetic head is used. The error recovery procedure attempts three repositions before an "abort" message is sent to the opera..
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