Problem Statement:
Amplifier is the generic term used to describe a circuit which produces and increased version of
its input signal. However, not all amplifier circuits are the same as they are classified according to
their circuit configurations and modes of operation.
A two stage audio amplifier has two stages with the audio signal being given as the input of first
stage and the amplified voltage signal is the output of the second stage amplifier) which drives the
load (8 ohm speaker). The block diagram of a two stage amplifier is given by:

First Stage: The first stage is a common emitter amplifier configuration. The common emitter
amplifier is used as a voltage amplifier. The input of this amplifier is taken from the base terminal,
the output is collected from the collector terminal and the emitter terminal is common for both the
terminals.
It is commonly used in the following applications:
 The common emitter amplifiers are used in the low-frequency voltage amplifiers.
 These amplifiers are used typically in the RF circuits.
 In general, the amplifiers are used in the Low noise amplifiers
It has the following advantages:
 The common emitter amplifier has a low input impedance and it is an inverting amplifier
 The output impedance of this amplifier is high
 This amplifier has highest power gain when combined with medium voltage and current
gain
 The current gain of the common emitter amplifier is high
Second Stage: The second stage is a common collector amplifier configuration. Input signal is
applied to the base terminal and the output signal taken from the emitter terminal. Thus the
collector terminal is common to both the input and output circuits. This type of configuration is
called Common Collector, (CC) because the collector terminal is effectively “grounded” or
“earthed” through the power supply

*TASK*:

To solve the Complex Engineering Problem refer to the above circuit diagram and follow these
steps :
Step 1. It is required to design the first amplifier stage with the following specifications for Q1:
IE= 1.5mA β=100 Vcc=15V

Step 2: Using the results obtained in step 1, perform the complete DC analysis of the above circuit.
Assume that β=100 for Q2
Step 3: Select the appropriate small signal model to carry out the ac analysis of the circuit. Assume
that the input signal from the mic vsig=10mVpeak sinusoidal waveform with f=20 kHz. Also find
the peak value of the amplified output signal.

Video games are rather complicated to program, not least of which because of the graphics work that needs to be completed to finish a video game. Still, even relatively simple games have historically had a chance of becoming popular (e.g. Tetris®). Since you are learning to program for the first time, let's look at a text-only game.

Write a program that has the computer generate a pseudorandom integer between -100 and +100, and ask the user to guess what the number is. To generate the pseudorandom number, research and use the randi command. If the user's guess is higher than the computer-generated pseudorandom number, print a statement to that effect. If the user's guess is lower than the computer-generated pseudorandom number, print a statement to that effect. Keep track of how many guesses it takes for the user to guess the right number, and print that information to the screen when the program terminates. Do not re-initialize the computer-generated pseudorandom number between iterations, otherwise the user will have a hard time trying to guess the computer-generated pseudorandom number.

Validate the user's input; if the user enters a number greater than 100 or less than -100, prompt the user to enter a number within the guess range. Do not count guesses out of range (i.e. greater than 100 or less than -100) as an iteration. Do not concern yourself with testing if the user entered non-numeric input, and assume that the user will enter an integer value. If the user enters the value inf, terminate the program (though count that iteration as a valid iteration for the purposes of seeing how many times the program iterated).

Use no more than two while loops to solve this problem, and emulate the output format in these two sample runs:

Sample Run #1 (with a computer-generated value of 9):

Enter your guess: 8
Sorry, your guess was too low. Please try again.

Enter your guess: 10
Sorry, your guess was too high. Please try again.

Enter your guess: 9

You guessed the correct value!

The correct value was 9.
The program iterated 3 times.

Sample Run #2 (with a computer-generated value of -3):

Enter your guess: 100
Sorry, your guess was too high. Please try again.

Enter your guess: -100
Sorry, your guess was too low. Please try again.

Enter your guess: inf

You asked to terminate the program.

The correct value was -3.
The program iterated 3 times.

Vance Asbestos Removal Company removes potentially toxic asbestos insulation and related products from buildings. The company’s estimator has been involved in a long-simmering dispute with the on-site work supervisors. The on-site supervisors claim that the estimator does not adequately distinguish between routine work, such as removal of asbestos insulation around heating pipes in older homes, and non-routine work, such as removing asbestos-contaminated ceiling plaster in industrial buildings. The on-site supervisors believe that non-routine work is far more expensive than routine work and should bear higher customer charges. The estimator sums up his position in this way: “My job is to measure the area to be cleared of asbestos. As directed by top management, I simply multiply the square metres by $4,700 per thousand square metres to determine the bid price. Since our average cost is only $3,700 per thousand square metres, that leaves enough cushion to take care of the additional costs of non-routine work that shows up. Besides, it is difficult to know what is routine or not routine until you actually start tearing things apart.”

To shed light on this controversy, the company initiated an ABC study of all of its costs. Data from the ABC system follow:

Locate the Consumer Price Index – August 2020 publication

  Helpful Tip: You can find the answers to the questions below in the first two pages of the publication.

• What happened to the CPI inflation rate in March, April, and May 2020? Why do you think this happened?

• What happened to the core rate of inflation in March, April, and May 2020? Why do you think this happened?

Lucy purchases a retirement annuity that will pay her $2,000 at the end of every six months for the first twelve years and $800 at the end of every month for the next seven years. The annuity earns interest at a rate of 3.1% compounded quarterly.

a. What was the purchase price of the annuity?

Round to the nearest cent

b. How much interest did Lucy receive from the annuity?

Round to the nearest cent

which of the following statements is TRUE about excel?

A. We can lock in cells by placing an exclamation point in front of the cells column and row

B.The first symbol to enter when entering a formula is the division sign

C. Bond prices are to be entered with a negative sign while par values are to be entered with a positive sign

D.The "PMT" function can be used to find the price of a bond

which of the following statements is TRUE about excel?

A. We can lock in cells by placing an exclamation point in front of the cells column and row

B.The first symbol to enter when entering a formula is the division sign

C. Bond prices are to be entered with a negative sign while par values are to be entered with a positive sign

D.The "PMT" function can be used to find the price of a bond

Li’s firm is fast growing. Therefore, it will pay no dividend for the next 5 years. After that, Li’s firm will initiate dividend payment. The first dividend will be $2 (at the end of the 6^th year) and the dividend will grow at a rate of 5% for 10 years. Then the industry starts to stabilize, and Li’s firm will pay $3 forever. If the required rate of return is 10%, calculate the stock price. use the formulas, not excel

olly purchases a retirement annuity that will pay her $2,500 at the end of every six months for the first twelve years and $300 at the end of every month for the next five years. The annuity earns interest at a rate of 4.3% compounded quarterly.

a. What was the purchase price of the annuity?

Round to the nearest cent

b. How much interest did Holly receive from the annuity?

Round to the nearest cent

Please answer the following question:

Discuss how the price of a bond is determined and provide an example of each of the following conditions

a.) A bond issued at premium

b.) A bond issued at par

c.) A bond issued at a discount

Provide a journal entry that would be made to record each of your bond examples as well as the first journal entry that would be made to amortize each bond's premium and discount.

Thanks!