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The equivalent circuit of a transducer that measures the speed of a motor is a current source in parallel with an output resistance. The current source produces an output of 1 μA per revolution per second of the motor and the output resistance is 50 k Ω.
Design a discrete transistor circuit that produces a full-scale output of 5 V for a maximum motor speed of 60 revolutions per second.
The nominal transistor current gain is hFE = 100 with tolerances of ±20 percent. The accuracy of the output signal is to remain within ±1 percent.
A Vs equals 1V source impedance 25ohms is connected by a switch to a 50-ohms lossless air transmission line 1 m long, terminated in a load of 30-ohms. At time t=0s, the switch is closed instantaneously to launch a step voltage down the line.
A 240V, short shunt, cumulative compound generator is rated at 100A. The shunt field current is 3A. It has an armature resistance of 50 milli-ohm, a series field resistance of 10 milli-ohm a field diverter resistance of 50 milli-ohm and a rotation..
A 6 pole d.c. generator runs at 1200 rpm on no load and has a generated emf of 250 v. -Calculate Flux per pole. - Calculate Effective pole arc length. - Calculate Average air gap flux density.
An inverting amplifier With nominal gain of -20V/V employs an op amp having a dc gain of 10^4 and a unity-gain frequency of 10^6 Hz. What is the 3-dB frequency f3dB of the closed-loop amplifier
Use Smith Chart: A 100 Ohm air-coaxial transmission line is measured to have an input impedance of 100 + j100 Ohms. If the system is operated at 100 MHz and is one meter long, what is the terminating load impedance
Look up 8b/10b encoding and explain what purposes (NOTE: purposes is plural!) it serves. How would you implement an 8b/10b encoder
what is the distance it must travel in order that its polarization is rotated 90??
A uniform plane wave propogates in the positive z direction with a frequency of 20 MHz. A probe is at z=0 m measuring the phase to 98 degrees and another probe at z= 2 m measures the phase to be -15 degrees what is the relative dielectric constant..
(TCO 3) What is the forward voltage drop (barrier potential) of a standard silicon diode? 0.3 V 0.7 V
Three screws are drawn at random from a lot of 100 screws, 10 of which are defective. Find the probability that the screws drawn will be nondefective in drawing (a) with replacement, (b) without replacement.
A M-bit thermometer code for the number k consists of k 1's in the least significant bit positions and M-k 0's in the more significant bit positions. A binary-to-thermometer code converter has N inputs and 2^N-1 outputs.
What is the expression for βz? - If Ag = 5 × 105 mS and Ag f = 10 mS, what is the required βz and RE? - If Ag increases by 10 percent, what is the corresponding percent change in Agf?
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