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A certain antenna has a radiation resistance of 51 ?, and an ohmic (loss) resistance of 10 ?. If a current of 2 A is driving the antenna, calculate the following:
a) the power radiated.b) the power lost due to heat.c) the total input resistance of the antenna.d) the efficiency of the antenna.
Every 64 cycles, the circuit outputs the average ofthe past 64 input V values, then in the next cycle begins a new calculation (in other words, its behavior repeats). During the cycles when the circuit is not outputting the average, itshould outpu..
Let x(t) = u(t) u(t 1).Find the average signal y(t) using the above integral. Let T = 1. Carefully plot y(t).Verify your result by graphically computing the convolution of x(t) and the impulse response h(t) of the averager.
The design guidelines for a circuit call for using only 1/4 W resistors. This means that the resistors are only capable of dissipating .25W of power without sustaining damage. The maximum voltage level in the circuit is known to be 12 V.
Desired D.C. Output : 10 V Load Variation: 0.3 kilo-ohms - 10 kilo-ohms Ripple Factor: Less than 0.1% for 2 kilo-ohms load Load Regulation: Better than 3 mV for a 1 mA change in load current
Compare a lumped element model of a lossless transmission line (single L and C) with the distributed model. Use the following values for the transmission line in this comparative analysis.
In an electroplating process, copper (ionic charge +2e, atomic weight 63.6 g/mol) is deposited using a current of 10.0 A. What mass of copper is deposited in 10.0 minutes. Avogadro's number is 6.022 × 1023 molecules/mol and e = 1.60 × 10-19 C.
A temperature sensor has a static transfer function of 0.15 mV/C° and a time constant of 3.3 s. If a step change of 22° to 50° C is applied at t=0, find the output voltage at 0.5 s from t=0s to t=10s
Design a one-op-amp high-pass filter with a gain of 20 and a cornerfrequency of 0.05Hz. Calculate its response to a step input of1mV.
Using many resistors and the DMM, try to determine what digits each colour band represents. Briefly explain your method and your findings in the space below.
Two forces, F1 and F2, act at a point. has a magnitude of 9.20N and is directed at an angle of 59.0 degrees above the negative x axis in the second quadrant. F2 has a magnitude of 6.00N and is directed at an angle of 52.6 degrees
Assume the factory described in the previous problem is fed from a line having an impedance of 0.02 + j0.16 O. The voltage at the factory is maintained at 480 V(rms). Find the average power loss in the line before and after the load is added.
Find the characteristics equation and the corresponding roots for the following ODEs and identify its case a) y" + 6Y' + 9y=0 b) 10y" + 18y' +5.6y=0 c) 10y" + 50y' + 65y =0 Slove the intial value problem a) problem 2a) with y(0)=2 and y'(0)=-5
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