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(a) Prove that the expression for the PSD of thermal noise in a resistor converges to the constant
(b) Assuming a temperature of , find the range of frequencies over which thermal noise has a PSD which is within 99% of its value at ƒ =0 .
(c) Suppose we had a very sensitive piece of equipment which was able to accurately measure the thermal noise across a resistive element. Furthermore, suppose our equipment could respond to a range of frequencies which spanned 50 MHz. Find the power (in watts) and the RMS voltage (in volts) that we would measure across a 75 Ω resistor. Assume the equipment had a load impedance matched to the resistor.
Assume the mixer is at a physical temperature T0.
Stator resistance and rotational losses may be neglected, and the rotor resistance and inductance may be assumed to be constant, independent of rotor frequency. Determine
Write a function that takes inputs of yards and feet (whole numbers) and calculates and returns an output of the total number of miles (a floating-point value). There are 5280 feet per mile. There are 3 feet in a yard.
An integer is said to be prime if it is divisible by only 1 and itself. Write a function called prime() that takes in one integer number, and returns 1 (true) if the number is prime and 0 (false) otherwise. Write a program that generates a random ..
hree 150 kVA, 480 V/4000, 60 Hz single phase transformers are to be installed on a 4000 V, 3 phase line. The exciting current has a value of 0.02 pu. Calculate the line current when the transformers are operating at no load.
Let X be a random variable uniformly distributed on [-2,2]. Define the random variable y=g(x), where g(x) { x+1 : x >= 0 { x-1 : x
Show by means of a drawing what happens if the angle is not an integer divisor of 180°. Use an angle of 75° as an example.
Two amplifiers are cascaded, one with a voltage gain of 6 db and the other with a voltage gain of 4. If 1 V is applied at the input of the first amplifier, what is the voltage at the output of the second amplifier
Compare the inductive reactance in ohms per kilometer per phase
Using the symbols we've learned in class (standard symbols used universally), draw a schematic showing the circuit of a 12-V car battery (represented as a voltage source connected to a light bulb (represented as a resistor).
Note that after a collision, the expected numbers are slightly different in two systems, but the difference is unimportant since collisions are rare.
Specify component values.
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