A5)
i) The journey of free electrons from the emitter to the collector in a NPN BJT consists of two parts. What are they ?
ii) A NPN BJT is made of two pn junctions, base/emitter junction and base/collector junction. Which pn junction is thicker and why ?
iii) How can you eliminate a pn junction?
iv) How can you increase or decrease the width of a pn junction?
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choose the correct answer
1-
The spectrum of analog signals is: *
Discrete and repeated every Fs
Continuous and repeated every Fs
Discrete and not repeated
Continuous and not repeated
2-For the following Matlab code, how many tones are going to be played by (sound) instruction? *
4
5
6
2
1
3
3-
In Assembly language, to print any number between 0 and 9 on screen using (INT 21h), you need to: *
Subtract 30h from the number and put it in DL
Subtract 30h from the number and put it in AL
Add 30h to the number and put it in AL
Add 30h to the number and put it in DL
4-
When writing a function in Matlab, only one of the following is correct: *
The function can be called only one time in the main program
The outputs should not be given a value in the function
The m-file containing the function should carry the function name
The inputs should not be more than the outputs
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Design a sequential digital circuit with one output that produces “…100110…” bit pattern continuously.( show state table, state diagram, show circuit diagram and waveform of the circuit) [Digital Systems 2]
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Write a code block to perform nested-for-loop sorting on a vector of State objects, arranging by their string name attribute in alphabetical order A-Z. Assume all names are fully uppercase and that there's an assignment operator for the class. The name of the vector is "states".
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The amount of $5000 is placed in savings account where interest is compounded continuously at the rate of 6% per year. How long will it take for this amount to triple?
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using matlab
Designing a program on ANY fractions Partial
Show the two formals or figures in time domin and z domin
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Design a second order (two pole) high-pass filter for the following specifications
Cut-off frequency, fo or fH = 2kHz
Maximally Flat, i.e. Q=1/√2
> Justify any assumption you make.
> Draw circuit with all designed values.
> Draw the frequency response (Gain magnitude only)
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I need a design of Up/Down Logic Counter
Brief information about the techniques to be used in the experiment will be given.
The stages of the design problem and what will be done in these stages will be specified. (state diagram, state tables, state assignments, output and state equations, implementation with gates and flip flops and so on.)
Material equipment list to be used in the implementation of the experiment will be provided.
In the section where the test result will be explained, the student will be asked to comment on the results of the experiment.
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what are the fundamental equations of electrostatics ? Explain their meaning. Give the name and unit of each term seen in the equations.
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Consider the set of integer numbers from 0 to 9, that is {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}. Bob wishes to use these numbers to create a 7-digit password to secure his new laptop. Note that each number can appear in any position (for example, 0 can be the first number in the password). (a) Find the number of 7-digit passwords that are possible. (b) Find the number of 7-digit passwords with distinct digits. (c) Find the number of 7-digit passwords that contain exactly three 4s (that is, inside the password the number 4 appears exactly three times). (d) Find the number of 7-digit passwords that do not contain any 1 (that is, inside the password the number 1 never appears). (e) Find the number of 7-digit passwords that contain at least one 6 (that is, inside the password the number 6 appears at least once). (f) Find the number of 7-digit passwords that contain exactly two 6s and one 5 (that is, inside the password the number 6 appears exactly twice and the number 5 appears exactly once). (g) Find the number of 7-digit passwords that contain exactly two 4s and three 2s (that is, inside the password the number 4 appears exactly twice and the number 2 appears exactly three times).
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Where is an autotransformer employed in a power system? Why?
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A double acting cylinder is to travel out when an
electrical pushbutton is actuated and remains in the forward end
position even when the button is released. A second button will
return the cylinder to its retracted position. (Use Direct
Mode)
electro pneumatic
draw daigram and explain functionality
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Precisely control of temperature in many industries is critical to ensure the quality of the product. Discuss how you will use the instrumentation amplifier using transducer bridge to measure the temperature. Use block diagram to illustrate your concept.
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Question 5
a) In your own understanding draw a static PMOS and NMOS structure
transistors and explain how each operates as switch , illustrate
your explanation with sketches.
b) Design a two way NOR Simple static CMOS Circuits , Explain the
circuit topology and its operation.
c) At your level in the field of Electronics and electrical
engineering ,draw the various Field effect transistor (FET)
possible configurations, In your own word and understanding briefly
analyze each configuration.
please answer all.thank you.
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