1. What is meant by logical effort. Discuss the logical effort of a 3 input, NAND and NOR gates

Draw the block diagram of phase-shift method and explain how the carrier and unwanted sideband are suppressed

draw appropriate diagrams and explain in detail, why in common emitter amplifier we should have the ac signal between base and emitter to be much less than the thermal voltage

Determine the energy at which the Boltzmann approximation may be considered valid. Calculate the energy, in terms of kT and EF, at which the difference between the Boltzmann approximation and the Fermi-Dirac function is (a) 2%, (b) 5%, (c) 10%, and (d) 20% of the Fermi function.

Mrs. Halima has bought an ultrasonic ranging sensor module HC-SR04. P1.1) If the manufacturer claims this sensor to be IP66 compatible. Please explain the properties of the sensor Mrs Halima must check in this context! (4 points)

Explain in detail the differences between 4-Bit Synchronous and Asynchronous
Counters. Each Flip-Flop is negative-edge triggered. Use the relevant block
diagrams, Truth Table of state sequence, and Timing Diagram to support your
explanation.

Design a modified sequence counter (Student ID Counter) that will count out the following sequence: The first four unique digits in your StudentID (not including the digit 9) followed by the digit 9 and then repeat. Use the excitation table method for your design. Treat unused states as “don’t cares”. Include a switch to initialize the counter to the first count in your sequence. Your design should include the following:

• a state diagram (include only the valid states)

• a circuit excitation table used to determine JK flip-flop input connections

• the K-maps used to generate minimal expressions for JK inputs

(use: 72569, and repeat)

Please help!

Suppose we need to connect Computer Network Research Lab (CNRL) network with address 167.89.0.0 through a router to the EE Department network with address 123.0.0.0 and connect CNRL network through a router to the EE Research network with address 222.22.2.0 . Please draw a diagram for this network connection. Choose IP addresses for each interface of each router and show several hosts on each network, with their IP addresses. Please briefly explain each step.

Q1. A station supplies 250 kVA at a lagging power factor (p.f) of 0·8. A synchronous motor is connected
in parallel with the load. If the combined load is 250 kW with a lagging p.f. of 0.9, determine :
(i) the leading kVAR taken by the motor.
(ii) kVA rating of the motor.
(iii) p.f. at which the motor operates.

Q2. A factory consists of the following
(i) An induction motor of 150 h.p with 0.7 p.f lagging and 80% efficiency.
(ii) A synchronous motor of 100 h.p with 0.85 p.f leading at 90% efficiency.
(iii) A lightning load of 50kW.
Find the annual electric charges if the tariff is Rs 100 per annum per kVA maximum demand plus 7
paise per kWh ; assuming the load to be steady throughout the year.

script for Secant Method. Using Matlab or Octave.

The data:

y = x.^2 - 1.2

x_lower = 0.4

x_upper = 0.6
Es = 0.5*10^(2-n)

n = 5

Flow-control mechanisms are used at both layers 2 and 3 of X.25. Are both necessary or is this redundant? Explain the problems which can be avoided for having flow control at both layers..

Suppose that you design an amplifier circuit but measuring the output on the oscilloscope shows that it is just oscillating wildly. List the first three things to check to understand what is causing the oscillation.

Should simulate at Tinkercad with UNO images.

For this project you are encouraged to come up with your own design.

Example project:

Implement a musical instrument using an Arduino, Push buttons/ keypad, LEDs, Piezo Speaker(s), potentiometer and other components if required.

The instrument should take user input from either pushbuttons or a keypad, and be able to play various tones on the speaker(s) accordingly. The tones should have some coherent musical/melodic progression (i.e. note frequency, delay, etc.) Add LEDs to light up in sync with the notes being played. Using a neopixel ring/strip instead of LEDs will also suffice.

BONUS (10 points) Use potentiometer(s) to control volume of the sounds.

BONUS (20 points) Use potentiometer(s) to control delay, pitch, reverb and echo effects

BONUS (40 points) Implement a system where a user can record a melody or tune on the instrument, and play it back if required (keypad or pushbutton)