Quiz on Reliability, ESD, Ethics Conduct. Select the correct answer for each

a) How is a product expected to fail after a very long time in use?

-Metal electromigration will short out the power supply

-Wearout

-MOS gate oxide will burst

-Electrical overstress

-The "divide" function will start losing bits randomly

b) Is there an issue preventing continuous improvement for better reliability in manufacturing?

-Customers who design high reliability products with your semiconductor parts will not allow substantial changes in manufacturing once the process is released

-No, customers demand continuous process improvement and lower price regardless of what needs to be changed

-Once the process achieves Six Sigma qualification on 3 parameters, no further change is permitted

-Customers expect the manufacturer to buy newer equipment every year to improve product reliability

-Manufacturers can always change the specification limits, but are not permitted to reduce variation

c) Explain HBM ESD?

-System power is cycled off to drain the charge, then the human accumulates an equivalent charge

-A cable connects from a human to the test board, causing a visible arc

-The semiconductor part is charged, and then zaps itself when metal contact is made

-Charged person grounds herself through a wriststrap, causing a fast discharge

-Charged person makes electrical contact with metal of a semiconductor part, causing a fast discharge

d) Why is prevention of CDM a high priority among manufacturers?

-VDM discharges can be so fast that even a small amount of stored charge can cause damage, and discharge may happen multiple times

-The slow discharge tends to drain batteries without you knowing it

-CDM occurs at so much higher voltage than HBM that it's much more dangerous

-Rules for prevention of CDM are more difficult and cost much more money to implement

-It's embarrassing when your customers find out that you have the same problem as them

Design up counter asyncronous MOD 12 and MOD 14 with JK Flip-Flop

Re-submission of question.                          Consider the full-bridge single-phase inverter with input voltage equal to 200V. This inverter is controlled by sinusoidal PWM technique with amplitude modu-      lation index equal to 0.5 to generate a 3- level half-wave symmetry waveform with frequency equal to 50 Hz.                            e)Calculate the amplitude of fundamen-   tal frequency.                                                  f) Draw the waveforms of refrence and      carrier signals.                                                g) Obtain the waveform of output voltage.                                                          h)Design the trigger signals of switches.   Thanks for your help.

Electromagnetic Waves question :
Drive the field expressions for TE modes in parallel plate wave guide

Question 2

(a) Explain the meaning of the following terms in the context of cellular telephony networks:

(i) Frequency reuse

(ii) Trunking

(iii) Micro and macro cells

(iv) Umbrella cells Describe the trade-off that must be made when selecting the number of cells which should be clustered together to form a location area in a cellular network. [6 marks]

(b) A number of techniques are used on both the base station and mobile station (i) to manage power consumption, and (ii) to minimise the effects of network interference. For each of the following terms, describe how the feature works and comment on whether, and how, it is used to address (i) and\or (ii).

(i) Time Division Duplexing

(ii) Adaptive Power Control

(iii) Discontinuous Transmission [4.5 marks]

(c) Subscriber A is a subscriber of an Irish mobile network who is roaming on a French mobile network. Subscriber B is a subscriber of UK mobile network who is currently an inbound roamer on subscriber A’s home network. Subscriber A initiates a voice call to subscriber B.

(i) Describe, with the aid of a diagram, the steps involved in the routing of this call to the point where subscriber B’s handset is paged.

(ii) Using this example, clearly explain the difference between late and early call forwarding.

(iii) Explain the meaning of the term call tromboning in the context of one of these call forwarding scenarios and outline how this is typically resolved when it occurs. [9.5 marks]

I have to write report about Application of Linear Algebra in Electronic Engineering.

Let me know about the examples simply and variously as possible as you can.

A system consists of 4 identical 250MVA generators feeding a load of 510MW. The inertia constant H of each unit is 2.5 on the machine base. The total load varies at 1.4% for a 1% change in frequency. If there is a drop in load of 10MW, determine the system block diagram expressing H and D on a base of 1000MVA. Give expression for the speed deviation, assuming there is no speed governor.

Illustrate in detail how to construct a BCD to 7-segment Decoder.

Why has the MOSFET outperformed the bipolar transistor?

mke individul modulees of for bit ader, for bit subtractor, for bit multiplier, for bit comparaator modules[You can Ignore this part]

aand theen use a multiplexxer to combine these modules to make an ALUu where user should select which operation he/she wants to perform (for instance, ALU may performs four bit addition when selection lines are ‘00’using selection lines of multiplexer or perform subtraction when selections lines are ‘01’ and so on).{Just make this}

using verilooog coding on xilinxX

answer within 1 hourrrr pleez

1. Please explain the operation principle of YIG resonator and MSW thin film resonator.

2 .Please explain the operation of the dielectric resonator based oscillator.

3. Please answer the following questions for the image rejection mixer.

a. Why the image signal is important in the heterodyne receiver or transmitter not in direct conversion receiver or transmitter?

b. What is benefit to use image rejection mixer instead of image rejection filter?

c. What is limitation in using image rejection mixer?

4. Please explane about three different types of FOMs of VCO based on your knowleage and explain how each FOM can be used for VCO performance.

1. Find the solution by using the Laplace transform. a) y ′′ + 2ty′ −4y = 1 , y(0) = y ′ (0) = 0

Suppose I had a budget of $150 dollars, what sort of relevant hardware / programming circuits or circuit related devices could I purchase and invest in in order to make myself more competitive in today's electrical engineering job market? Initially I wanted to invest in arduino, but I heard arduino is outdated and not beneficial in today's market. What are similar more relevant technololgies that I can invest in as a recent electrical engineering graduate looking for an entry level position?

give some examples(based on questions) for skipping state synchronous counter and explain the types of synchronous counter.

How to know the direction of absolute encoder ?