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design a digital lock. The lock will have four buttons for you to enter a secret three-digit code to unlock it. You will use the pushbuttons RON(3:0) on the FPGA board for this - RON(0) will represe
Determine the minimum oxide thickness in the field region (the field-oxide thickness) needed to prevent current leakage between neighboring MOSFETs. Neglect the oxide charge, and consider aluminum
The density of electrons and the electron mobility in the graphene sheet are NI = 5 x 10^12 cm-2 and µ0 = 20,000 cm2/Vs, respectively. a) Determine the sheet resistance of this graphene film.
A stream of air at 80 °F and 1.2 atm absolute flowing at a rate of 200 ft3/h is blown through ducts that pass through the interior of a large industrial motor. The air emerges at 500 °F. Cal
Collecting and focusing sunlight and using the focused beam to heat a fluid is an old idea, and as the environmental costs of fossil fuel combustion mount, solar heating becomes an increasingly attr
design a Mealy type circuit whose response to a binary sequence is to output a 1 iff the current and previous bit are both the same value. a) Draw a state diagram, showing state, input, output b)Comp
A voltmeter is specified to have an accuracy error of ±0.1% of full-scale on a ±1V scale. If the meter produces a reading of 0.323VDC, what is the minimum and maximum DC levels that mi
Assume that the initial energy stored in the inductors shown in the circuit is zero. Find the equivalent inductance with respect to terminals a and b
What are the test inputs we use to evaluate steady-state error (SSE). How many integrations in the forward path are needed (type of the system) to get zero SSE for each of these test inputs.
Design a code to open a vault (after entering the correct 4-number sequence "1234"), it displays the word OPEN when the correct sequence is entered.
Consider a 3 phase, 2 pole induction machine. Neglect the stator windings resistance and the leakage inductance. The rated voltage is 208 V (line-line, rms) at 60 Hz. Lm=60 mH, and the peak flux den
Draw the phasor diagrams associated with under-excited and over-excited synchronous motors and show the power factor of operation associated with each.
Give the circuit that adds two BCD numbers and gives out a BCD number. The input BCD numbers should be of two digits and the output BCD number should be of 3 digits. Explain the algorithm for the ad
A circuit computes the product of two numbers, a 4-bit A[3..0]=A3A2A1A0 and a 3-bit B[2..0]=B2B1B0 which they appear in input. The output P[6..0]=P6P5P4P3P2P1P0 represents the answer (e.g. if A=1011
Design a circuit that can detect the pattern '110' in a serial input stream(that is every time pattern is detected, the output is 1, otherwise 0) using a state machine and K-maps. Draw the implement
a 220v shunt motor driving its normal load draws an armature current of 50A. The armature resistance is 0.25ohm. determine the armature current it will draw when connected to 200V source while maint
he windings of a large electromagnet have an inductance of 10.0 H and a resistance of 8.00 Ohm. The electromagnet is connected to the external EMF of 230 V. After electromagnet is switched on
(a) if there is no current in the loop, what is the magnetic flux through the coil (b) When the current in the coil is 3.8 A in certain direction, the net flux through the coil is found to vanish. W
Two circular poles of the electromagnet, facing each other, both have a radius of R=0.1 m. The electromagnet is suddenly disconnected from its power source, and magnetic field decreases at a r
A 2-pole, 3 phase (PMAC) brushless-dc motor drive with a torque constant Kt and the voltage constant Ke being 0.5 in MKS units and the synchronous inductance is 15 mH and supplying a torque load TL
If 50.0 cm of copper wire (diameter 1.00 mm) is formed into a single circular loop and placed perpendicular to the uniform magnetic field that is increasing at a constant rate of 10.0 mT/s, at what
The 1 m long wire is oriented perpendicularly to the infinitely long wire, and the end closer to the infinitely long wire is located 0.5 m from it. Find the induced EMF. Hint: solving the problem re
A very long, tightly-wound solenoid has a circular cross section of radius r = 2.6 cm . The magnetic field outside the solenoid is negligible. Throughout the inside of the solenoid the magnetic fiel
Design a combinational circuit that detects an error in the representation of decimal digit in Excess-3. The output of the circuit must be equal to logic-1 when the inputs contain any one of the six i
A 1/10hp motor has a 1000 rpms with 20v across the armature and series winding there are three speed control switches. The motor speed decreases linearly what are the four speeds available if each r