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A fluid level control system includes a tank, a level sensor, a fluid source, and an actuator to control fluid inflow.
Consult any classical control text1 to obtain a block diagram of an analog fluid control system. Modify the block diagram to show how the fluid level could be digitally controlled.
The current in a single-loop circuit is 5.0 A. When an additional resistance of 2.0 O is inserted in series, the current drops to 4.0 A. What was the resistance in the original circuit
Assume master NO start and NC stop buttons and that limit switches have both NO and NC contacts. The system stops if a thermal overload occurs and turns on a red light. Develop the physical ladder diagram.
Explain how energy efficiency can be traded off for bandwidth efficiency by multilevel modulation schemes. Rank the following modulation schemes: 64-ary PSK, Binary FSK, QPSK in terms of bandwidth efficiency and energy efficiency.
A 20 vrms, 60 hz ac source is in series with an ideal diode and a 100 ohm resistance. Determine the peak current and peak inverse voltage (PIV) for the diode
A semiconductor device is characterized by the idealized energy band diagram in the figure below. It is also known that EG = 1.12eV, ni = 1010 cm-3, and kT = 0.0259 eV. Also, μn = 1345 cm2 V-1 - sec-1 and μp =458cm2V-1-sec-1 atbothx=xa andx=xb.
Vgs is the switchcontrol voltage. Find the switch on-resistance Rds and the voltageVds obtained when Vgs=5V and Id=1mA. If μp=0.5μn what must bethe PMOS device W/L to provide the same NMOS on-resistance. AssumeVtn=|Vtp|.
(a) Implement a 4-bit ripple carry adder, (b) a 4-bit carry lookahead adder, (c) compare the cost of these two implementations, and (d) compare the processing speed of these two implementations.
Neglecting the armature inductance and the rotational losses, show that by the time the motor reaches its final speed, the energy dissipated in the armature resistance is equal to the energy stored in the rotating parts.
Three loads are connected in parallel to a 120
Write the expressions for the induced emf and torque of a dc machine using standard symbol. What is the machine constant? What is the value of the constant relating wm and n?
determine the following by sloving laplace equations: a) the potential and electric field distribution in the dilectric slab. b) the potential and electric feild distrivution in the air space between the dilectric slab and the upper plate and c) t..
What are they? In question 4, how does this differ from a PCM frame?
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