The Voltage amplifiers are available with Avoc = 8 V / V,
Rin = 1.8 kΩ, Ro = 850 Ω. With a 12V DC power source, each amplifier
consumes 1.5 mA average current.

a. How many amps do you need to cascade to get so
minus a voltage gain of 1000 with a load resistance of 1.0 kΩ?
b. What is the voltage gain Av obtained? (Answer with an integer number
rounded)
c. For the cascade connection, find the open circuit voltage gain.
(Answer with a rounded integer)
d. If you have a 1.5 mV input, how efficient is the equivalent amplifier?
and. 
e.Find the transconductance of the complete circuit

Plate values ​​of a three-phase transformer are given below:
1600 kVA, 15 kV / 400 V, 50 Hz, io = 1.2%; ukN = 6%, idle losses 2450 W, rated copper losses of power 14500 W; Dy5.

a) Calculate primary and secondary line and phase currents.

b) Secondary at 75% load in power factor with 0.85 inductance and 0.85 capacity calculate the voltage separately. Compare and interpret the results. capacity at what time of day can the upload be seen? To prevent voltage change What solution should be applied?

c) Calculate the rated operating efficiency and maximum efficiency of the transformer.( Power Factor of b) can be used in c).

d) Draw the fastening group. How is this transformer parallel with the transformer Dy11 connected
run?

e) If this transformer is operated at 60 Hz, which sizes change how?
Your review.

1. design a mod-16 ripple down counter using positive triggered

2. design a synchronous counter to count in the following sequence : 15, 9,, 11, 5, 2, 13, 1

Identify and discuss the role of energy efficiency in residential, commercial, and industrial sectors Discuss the policy actions to be taken to promote energy efficiency programs?

It composed 16K × 16 memory by using two DRAM chips that have 8K capacity. If the row × column matrix is square for the address, how many address lines and how many data lines should each chip have?

Mookodi Enterprise is a business consultancy with 543 employees. They are based in the north of Johannesburg on a 10Ha campus. Mookodi connects to the national grid at 11kV and pays a seasonal industrial low voltage (LV) tariff of 141.67 cents in summer and 165.94 cents in winter. Thirty percent of Mookodi’s employees are based at their clients’ offices and are not permanently based on the campus.

The campus has the following buildings:

• Canteen (Purple)
• Welcome Centre, Gym and Conference Centre (Green)
• Guardhouse (Light blue)
• Main Office Building 1 (Maroon)
• Main Office Building 2 (Dark blue)

Below is the campus’ electricity consumption over the last year:

QUESTION 1

in 800 words discus the campus’ load profile

3- (10 pts) Make a status table for a 3-bit counter that with input x = 1 counts the odd numbers and with input x = 0 counts the even numbers backwards.

Help me please! Thanks!!!

What does a transfer function represent?

What are the poles and zeros of a transfer function?

What is the characteristic polynomial?

What is stability?

What is the condition of stability when the system has been expressed in differential equation form?

What is the condition of stability when the system has been expressed in transfer function?

BACHELOR OF TECHNOLOGY: MARINE ENGINEERING

IAA520S: Instrumentation & Automation – Laboratory 1


Student’s Full Name: -------------------------------------------

Student’s No: -------------------------------

Bench No: ------------------------------

Date: ---------------------------


STEP AND IMPULSE RESPONSE OF FIRST AND SECOND ORDER SYSTEMS                OBJECTIVES

To determine:

1. Step response of 1st order system

2. Impulse response of 1st order system

3. Step response of 2nd order system

4. Impulse response of 2nd order system

EQUIPMENT:

 Computer with Matlab software

MARKS OBTAINED:



Marks

% weight
Part 1 16 25
Part 2 20 60
Part 4+ Report 12 15
TOTAL MARKS 48 100

Part 1:          (16) Pre-Lab Exercise

Obtain step and impulse response of the following systems with unity feedback connection:

1. G(S) = 1 S+11
2. G(S) = 1 S+2


NB: The prelab must be typed and equations written using the in-built MS equation.

Part 2:                (20) Lab Exercise

Obtain step and impulse response of the following systems with unity feedback connection

1. G(S) = 1 S2+3S+4
2. G(S) = 19 (S+4)(S+8)




Part 3:Post-Lab

1. What do you mean by rise time?    (2)

2. Why is less overshoot desired for practical systems? (2)

Part 4: Report Prepare your Lab report according to the following general format: (8) Cover Page (Make the Lab manual cover page your cover page).

I. Objectives of the Lab

II. Introduction to the Lab by giving a brief theory about the Lab

III. Give a list of equipment used

IV. Outline the procedure followed during the execution of the lab

V. Present your results (give appropriate tables and diagrams)

VI. Give an analysis of your

VII. Give a concise conclusion

Design a sequence detector to detect either 01 or 10 sequences. Include a reset state. Show the state transition diagram, state table, K-maps, and complete circuit.

draw a PLC ladder diagram for 5 floor elevator

Design the circuit that gives the total number of your school number as an asynchronous counter. If 4 + 6 + 0 + 4 + 1 + 8 + 0 + 4 + 0 = 27, Mode 28 counter will be designed. FF with negative edge triggering will be used. You will definitely show the clock pulse, input and output connections of the FFs you will use. Otherwise, you will not get points because the counter will not work or it will work incorrectly. The circuit diagram will be drawn by hand

İmportant note:When solving your questions, remember to show the falling or rising edges of the signals. Do not leave cells empty in Karnough placements. Please show the groupings

1. A length-10 discrete-time signal x[n] is defined by the values { 6, 1, 1, 6, 1, 1, 6, 1, 1, 0 }.
After taking the 10-pt DFT, X[k], determine the DC value, i.e., X[0].

2. Suppose that the N-point DFT of the signal x[n]x[n] is X[k]. A new signal y[n] is formed by adding a constant:

y[n]=x[n]+1 for n=0,1,2,…,N−1n=0,1,2,…,N−1

The N-point DFT of Y[k] is: