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A generator uses a coil that has 110 turns and a 0.475 T magnetic field. The frequency of this generator is 43.0 Hz, and its emf has an rms value of 230 V. Assuming that each turn of the coil is a square (an approximation), determine the length of the wire from which the coil is made.
A 5 horsepower dc mahine is supplied with 120 V dc and delivers rated power at 1000 rpm. The machine has an efficiency of 80 %. What is the developed torque at the output
In transformer designs, often you can find an air gap in the core. In all the electric machines, there is an air gap between the stator and rotor. In both cases, flux will go through both core material and the air gap.
Given two NPN BJTs having β= 100 and ro = 100 Kohm. Using a single 5V dc power supply, design a differential pair amplifier having 1mA bias current in each transistor. What is its maximum gain for linear operation (balanced input, unbalanced outpu..
In the spectrum of a complicated in the time domain biological signal we observe ten prominent frequency components with a lot of leakage around them. Where is this leakage in the frequency domain more probably coming from
Determine (a) the input to the detector, (b) the optimum threshold (to be compared with the detector input) that minimizes the average probability of error, and (c) the average probability of error.
design a 100 hp motor controller circuit which has a push button to start and stop the motor. include an external cooling fan and a means to automatically shut down the motor is it overheats. Hint attach thermostat to case of motor.
(1) What happens if we connect an integrator and a diffetentiator together in series. What do we get. 2) Explain what is meant by 1nV/rtHz. What is the meaning of this specification.
draw a gate level schematic of a 4bit ALU that can ADD, Subtract, and AND. include the use of an adder/subtractor unit consisting of 4 full adders, and 4-bit 2:1 mutiplexer. No diagrams, gate level schematic only.
A total charge Q Coulombs is distributed uniformly over the length of a straight segment of length L. Find the absolute potential at a distance h off of the end of the segment. How much work is needed to transport a point charge Q1 from infinity t..
A voltage source v(t) = 28.2cos(50000t) is wired in series with a 100 Ω resistor, a 0.40μF capacitor, and a 2.0 mH inductor. 1. Express the voltage from the source as a phasor, V. 2. Find the phasor current I in all the elements.
A balanced three-phase source is supplying 90 kVA at 0.8 lagging to two balanced Y-connected parallel loads. The distribution line connecting the source to the load has negligible impedance. Load 1 is purely resistive and absorbs 60 kW.
Two statistically independent random variables, X and Y, have variances of sigma^2 (X) =9 and sigma^2(Y) =25. Two new random variables are defined as: U = 3X + 4Y V = 5X - 2Y (a) Find the variances of U and V.
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