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Question Power Systems
1. Consider a three-phase power system with one-line diagram shown in Figure 1. The three-phase trans-
former between CBs 1 and 2 (CB: circuit breaker) nameplate ratings are listed: 5MVA, 13.8A-138.0YkV,
the transformer reactance X₁1 = 3.80 (viewed from low voltage side 13.8kV, resistance is negligible).
The impedance of the transmission line between CBs 3 and 4 is ZL1 = (10+j100). -(50 pts)
(a) Pick up SB = 100MVA for the entire three-phase system, and rated voltage VB = 138.0kV, calculate
the per-unit line L1 and transformer impedance values.
(b) If an SLG fault occurs at the midpoint of the line (L2) between CBs 5 and 6, which breaker(s) should
operate? If the CB 5 or CB 6 does not operate, which breaker(s) will provide the backup protection?
(c) List the operating CB(s) for different zones, which are listed in Figure 2.
(d) If the second generator is connected at bus 3, the system (generators, buses, and transmission lines)
is protected by overcurrent relays R1 to R12. Assuming the directional overcurrent relays are used
for three transmission lines, what is the remote backup relay(s) for R7? And why?
G
Generator
mm
www
Transformer -
GSU
Bus 1
depending
on which
breakfas
Bus 3
Transmission line L1
Shunt
Reactor
L3
Shunt
Capacitor
Figure 1: A three-phase power system.
Bus 2
Distribution
Transformer
Feeder
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Question Hydraulics
Q1. Calculate capillary rise/fall in a glass tube 2 mm diameter when immersed in (a) water (b) mercury.Both the liquids are at 20°C and the surface tension values at this temperature for water and mercury are 0.072 N/m and 0.052 N/m respectively. The specific gravity of mercury is 13.6. The contact angle of water and mercury are 0° and 130° respectively.
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Question Circuits
The switch in the circuit has been closed for a long time, and it is opened at t=0. Find v(t) for t>= 0. Calculate the initial energy stored in the capacitor. (a). When the switch is closed, calculate the value of Vc. (b). When the switch is opened, find the time constant. (c). Find v(t) for t>= 0. (d). Find p(t) for t>= 0. (e). Calculate the initial energy stored in the capacitor.
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Question Kinematics of Machines
• 2-40 Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kj of heat is lost to the surrounding air. The paddle-wheel work amounts to 500 N:m. Determine the final energy of the system if its initial energy is 12.5 kJ.
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Question Thermodynamics
A rigid 10-L vessel initially contains a mixture of liquid water and vapor at 100° C with 12.3 percent quality. The mixture is then heated until its temperature is 150° C. Calculate the heat transfer required for this process in kJ.
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Question Thermodynamics
3.19. An ideal gas initially at 600 K and 10 bar undergoes a four-step mechanically reversible cycle in a closed system. In step 12, pressure decreases isothermally to 3 bar; instep 23. pressure decreases at constant volume to 2 bar; in step 34, volume decreases at constant pressure; and in step 41, the gas returns adiabatically to its initial state.Take Cp = (7/2)R and Cy = (5/2)R. (a) Sketch the cycle on a PV diagram. (b) Determine (where unknown) both T and P for states 1, 2, 3, and 4. \text { (c) Calculate } Q, W, \Delta U, \text { and } \Delta H \text { for each step of the cycle. }
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Question Thermodynamics
4) Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 35°C at a rate of 0.018 kg/s and leaves atS00 kPa as a saturated liquid. If the compressor consumes 1.2 kW of power, determine (a) the COP of the heat pump and(b) the rate of heat absorption from the outside air.
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Question Chemical Thermodynamics
E2A.6(a) A sample of 4.50g of methane occupies 12.7 dm3 at 310 K. (i) Calculate the work done when the gas expands isothermally against a constant external pressure of 200 Torr until its volume has increased by 3.3 dm². (ii) Calculate the work that would be done if the same expansion occurred reversibly. E2A.6(b) A sample of argon of mass 6.56g occupies 18.5 dm3 at 305 K.(i) Calculate the work done when the gas expands isothermally against a constant external pressure of 7.7kPa until its volume has increased by 2.5 dm3.(ii) Calculate the work that would be done if the same expansion occurred reversibly. F=\frac{k T}{2 l} \ln \left(\frac{1+v}{1-v}\right) \quad v=\frac{n}{N} where k is Boltzmann's constant, N is the total number of units, and l= 45 nm for DNA. (a) What is the magnitude of the force that must be applied to extend a DNA molecule with N=200 by 90 nm? (b) Plot the restoring force against v, noting that v can be either positive or negative. How is the variation of the restoring force with end-to-end distance different from that predicted by Hooke's law? (c) Keeping in mind that the difference in end-to-end distance from an equilibrium value is x = nl and, consequently, dx = ldn= Nldv,write an expression for the work of extending a DNA molecule. Hint: You must integrate the expression for w. The task can be accomplished best with mathematical software.
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Question Thermodynamics
2. (1-62) A mercury manometer (p = 13,600 kg/m') is connected to an air duct to measure the pressure inside. The difference in the manometer levels is 15 mm, and the atmospheric pressure is 100kPa. a. Answer in one sentence: Judging from figure below,determine if the pressure in the duct is above or below the atmospheric pressure. (Points 2) b. Determine the absolute pressure in the duct. (Points 7)
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Question General Biological Science And Research
Q3.1. Yeast have mitochondria and can perform cellular respiration. What would you expect to be consumed and produced during the process of cellular respiration in yeast? a.Glucose and O2 consumed; CO2 H20, and energy produced. b.Glucose, H2O, CO2, and energy consumed; O2 produced. c. CO2 and H2O consumed; glucose, O2, and energy produced. d. CO2 and energy consumed; H20, 02, and energy produced.
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Newly Added
Question Corporate Accounting
Question
Balance the Accounting Equation
Determine the effects of Transactions on the Accounting Equation.
Instructions:
Use the above format.
Find all the required data in reference section.
Submit solution in Excel.
Handwritten solution will not be accepted.
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Question Mechanics
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Required information
A rope connecting points A and B supports the force F shown in the figure. Write expressions using Cartesian vector representation for the following. Take L = 10 ft and F = 14 lb.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
y
L
B
x
/
1 30°
F
< Prev
5 6 7
9
of 17
S
V
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IENIESCHILOLIVII IVI LITE
!
Required information
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NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
y
L
x
1 30°
F
T BA : the position vector from B to A. (Round the final answers to four decimal places, Include a minus sign if necessary)
T BA = (
+
j ) ft
< Prev
5 6 7
.. 9
of 17
S
A
E
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Question Mechanics
3. Obtain the membrane stress resultants for the axisymmetric shell whose cross-section is shown below. The shell is filled with a liquid of density y to the level indicated and the self weight of the shell is negligible. The shell is supported on a ring beam at the position shown. Sketch the distribution of the meridional resultant, Nm.
A
Im
B
CONE
3m
30°
GO
F
SPHERE
C
2m
RING BEAM
D
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Question Educations/Teaching
Curriculum Models Assignment
Students will work to thoroughly research one of the following curriculum models; Montessori, Reggio, Emergent or High Scope and complete all of the following parts of the project.
Part One (50 points)-Students will create a PowerPoint Presentation. This slideshow should include a minimum of 12-15 slides and be colorful and creative. Please include both information about the curriculum model, its history as well as pictures of actual classrooms and materials. PowerPoint slides should be creative, visually stimulating and organized in a logical manner.
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Question Matlab And Simulation
Lab Sheet 6: Performance Analysis of a Three-Phase Induction Motor
Objective:
Analyze and calculate various performance parameters of a three-phase, 4-pole, 200V, 400Hz induction motor. Understand the effects of electrical properties on motor performance using MATLAB, Python, or Excel.
Equipment and Software:
MATLAB, Python, or Excel
Calculator for manual verification
Motor Specifications:
Type: Three-phase, 4-pole induction motor
Rated Voltage: 200V
Frequency: 400Hz
Stator Resistance (𝑅𝑠Rs ): 1.71 ohms
Stator Reactance (𝑋𝑠Xs ): 0.12 ohms
Rotor Resistance (𝑅𝑟Rr ): 0.5 ohms
Rotor Reactance (𝑋𝑖′Xi′ ): 0.3 ohms
Magnetizing Reactance (𝑋𝑚Xm ): 32 ohms
Slip (𝑠s): 2.5%
Friction Losses: 100W
Negligible Core Losses
Tasks:
Calculate the Synchronous Speed:
Use the formula: 𝑛𝑠=120×𝑓𝑃ns =P120×f
Where 𝑓f is the frequency, and 𝑃P is the number of poles.
Calculate the Motor Speed at Full Load:
Considering the slip (𝑠s), use the formula: 𝑛=𝑛𝑠×(1−𝑠)n=ns ×(1−s)
Determine the Total Impedance:
Combine stator impedance, rotor impedance referred to the stator, and magnetizing impedance. Use parallel and series combinations as applicable.
Calculate the Stator Current and Power Factor:
Use Ohm’s law and impedance to find the current: 𝐼𝑠=𝑉𝑝ℎ𝑍𝑡𝑜𝑡𝑎𝑙Is =Ztotal Vph
Determine the power factor from the impedance phase angle.
Compute Stator and Rotor Copper Losses:
𝑃𝑠𝑐𝑢=3×𝐼𝑠2×𝑅𝑠Pscu =3×Is2 ×Rs
𝑃𝑟𝑐𝑢=3×𝐼𝑟2×𝑅𝑟Prcu =3×Ir2 ×Rr
Calculate the Air Gap Power:
𝑃𝑔𝑎𝑝=𝑃𝑟𝑐𝑢/𝑠
Determine the Developed Power and Torque:
Subtract rotor copper losses from the air gap power for developed power.
Calculate the torque using the developed power and motor speed.
Assess Input and Output Power:
Input power calculation incorporating power factor.
Output power considering friction losses.
Evaluate Motor Efficiency:
Ratio of output power to input power, expressed as a percentage.
Instructions:
Students may choose MATLAB, Python, or Excel to perform the calculations.
Document all steps, formulas, and intermediate values.
Discuss the impact of slip, stator, and rotor resistances on motor performance.
Submission:
Submit all calculations, code (if applicable) and a discussion on the implications of your findings on motor design and operation.
Lab Sheet for Session 5
Objective:
Analyse DC motor operations using MATLAB and perform a comprehensive load analysis for an aircraft's electrical system using Excel.
Materials:
MATLAB software
Microsoft Excel
Exercise 1: DC Motor Analysis Using MATLAB
A DC shunt motor connected to a 460-V supply has an armature resistance of 0.15 Ω. Calculate:
(a) The back e.m.f when the armature current is 120 A.
(b) The armature current when the back e.m.f. is 447.4 V.
A DC shunt motor connected to a 460-V supply takes an armature current of 120 A on full load. Calculate the back e.m.f. at this load given the armature resistance of 0.25 Ω.
A 4-pole DC shunt motor takes an armature current of 150 A at 440 V, with an armature resistance of 0.15 Ω. Calculate the back e.m.f. at this load.
A 28 V DC motor with an armature resistance of 0.3 ohm, rated at 800 rpm and 5 A, is used to drive a pump. Calculate the no-load speed.
Exercise 2: Load Analysis Using Excel
Using the provided aircraft electrical data and load profiles, compute the following using Excel:
The electrical data for a military aircraft is as follows:
Number of generators : 2 (split bus)
Number of inverter (for emergency use only) : 1
Number of Transformer Rectifier Unit : 2
Number of battery : 1
Specs:
Generator
Voltage
115
Frequency
400
Power Factor
0.8
Configuration
WYE
Max Continuous Power Rating (kVA)
15
Interval Rating (5 s – KVA
24
Interval Rating (5 min – kVA)
18
Inverter Emergency
Rating (kVA)
15
Voltage (AC)
115
Frequency
400
Power Factor
0.8
Configuration
WYE
TRU
Rating (amps)
150
Output Voltage (DC)
28
Max Continuous Power Rating (kVA)
150
Interval Rating (5 s – KVA
600
Interval Rating (5 min – kVA)
225
Battery
Rating (AH)
40
Output Voltage (DC)
28
There are seven flight profiles.
G1 : Start-Up
G2 : Taxi
G3 : Take Off and Climb
G4: Cruise
G5 : Landing
G6: Ground Alert
G7: Double Gen Failure
The various AC Loads are as follows:
LRU
Consumption (VA)
Profiles Used
Operating Time
Fuel Booster Pump
1800
G1, G6
Continuous
Fuel Transfer Pump
1628
G1, G6,G7
Continuous
Amplifier
10
G1, G3,G7
Continuous
Oxygen
9
G2, G3,G4,G7
Continuous
Cabin Control
23
G2, G3,G5,G6
Continuous
Cockpit Lighting
167
G2, G4,G5,G6
Continuous
Heat
270
G1, G2, G5,G6
Continuous
Radar
2500
G1, G4, G6
Continuous
Avionics Computer
170
G1,G3, G4,G6,G7
Continuous
Avionics Sys 1
2700
G3, G7
Continuous
Avionics Sys 2
870
G5,G7
Continuous
HUD
235
G3,G4,G5
Continuous
Fuel Measurement
28
G4,G5
Continuous
Weapon System
400
G2, G6
Continuous
EW System
3410
G1,G2, G6,G7
Continuous
Nav 1`
132
G1,G2, G4,G6,G7
Continuous
Nav 2
85.7
G1,G5, G4,G6,G7
Continuous
GPS
98.9
G5,G6,G7
Continuous
26 V transformer
82
G2,G5
Continuous
Others
4300
G3
Continuous
The various DC Loads are as follows:
LRU
Consumption (Amps)
Profiles Used
Operating Time
VOR/ILS
2
G1, G7
Continuous
EW1
5.5
G5, G7
Continuous
EW2
1.52
G2, G5,G7
Continuous
Controller
0.1
G2, G5, G6
Continuous
J Box
0.5
G2, G4,G5,G6
Continuous
Air Con
1.8
G3, G4,G5
Continuous
Cockpit Lights
4.7
G2, G3,G5,G6,G7
Continuous
Anti-Collision Lights
3.4
G1, G4, G3
Continuous
Formation Light
0.2
G7, G4, G3
Continuous
Landing Light
16.1
G6
Continuous
EFIS
2.33
G6,G7
Continuous
ADAHRS
0.6
G2
Continuous
Transmitter
14.28
G4,G5,G6,G7
Continuous
Receiver
3.57
G2, G3,G5,G6,G7
Continuous
Standby
4
G3,G5,G6,G4
Continuous
Comms Panel
0.3
G4, G3,G5,G6,G7
Continuous
AWS
6.9
G2, G5,G7
Continuous
SMD
5
G7
Continuous
Master Comp
1
G7
Continuous
Others
122
G1
Continuous
AC Load Analysis: For each flight profile, compute the total consumption in VA.
DC Load Analysis: For each flight profile, compute the total consumption in Amps.
Evaluate whether the provided generators, inverter, and TRU can cater to these loads under different flight profiles.
Questions:
How does the back e.m.f. affect the performance of a DC motor?
What is the impact of varying the load conditions on the electrical system of an aircraft?
Can the aircraft's electrical system handle all operational scenarios without overloading any component?
Lab Sheet for Session 4
Objective:
Explore the Fourier series representation of square waves and perform detailed harmonic power analysis for inverters in electrical circuits.
Materials:
Microsoft Excel software
Exercise 1: Fourier Series Analysis of a Square Wave
Given a square wave of amplitude 3 V and frequency 50 Hz, use MATLAB to compute the Fourier series coefficients up to the 25th harmonic. Sum up to 12th harmonics and up to 2th 5 harmonics plot the two resulting waveform. Observe which waveform (12 vs 25 harmonics) looks more like the original square wave.
Questions:
Which waveform resembles the original square wave more closely, and why?
How does increasing the number of harmonics affect the approximation of the square wave?
Exercise 2: Power Analysis for Inverter Circuits Using Excel
Using Microsoft Excel, perform a detailed power analysis for a half-bridge and a full-bridge inverter under the following conditions:
Load = 20 ohms, DC voltage = 20V, frequency of switching = 200 Hz.
Calculate up to the 100th harmonic.
Columns: Harmonic Number, Frequency, Voltage at the Harmonic, Resistance, Inductive Reactance, Impedance, Current, Power Factor, and Power.
Compute Total Power, Fundamental Power, Total Harmonic Power, and Total Harmonic Distortion (THD).
Repeat for the two inverters for
Load = 20 ohms, L = 159 mH, DC voltage = 20V, frequency of switching = 200 Hz.
Questions:
How does the addition of inductance affect the power distribution across the harmonics?
What implications do your findings have for the design and operation of inverter systems?
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Question Managerial Accounting
Question
Create a Production budget for the Gertrude for the month of July, August and September. Assume units as constant- 1000 units.
Instructions:
Use Excel to create the Production Budget.
Show all the calculations using excel functions and formulas.
Handwritten solution will not be accepted.
Do not use AI.
Verified Answer
Question Advanced Mathematics
Math-Help-Services.com
Introduction to Polynomials 3 Shannon MacLean Question 1 Question 3 Which of the following polynomials are written with their Indicate the degree of the polynomial given below. terms in the proper order?
1. 4x-1 2. x4 - 4x2 3. 2x+5x2 + 9×4
16x+4-x2
Question 4 Indicate the degree of the polynomial given below.
Question 2 Which of the following polynomials are written with their terms in the proper order?
7-5x2 -12x
--
1. 3x2 -> + 5x4 + 10 2. 4x3 - x2 +9x-7 3. 5x3 -x+12
Question 5 indicate the degree of the polynomial given below.
9+5x4
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Question 6 Which of the following polynomials are written with their terms in the proper order?
Question 8
Which of the following polynomials are written with their terms in the proper order?
1. x - x4 -x3 2. 7x-4x2 -2x4 3. 5x+ +9x2 - 8
1. x2 - 4
2. 5x2 - x-15x4
3. 81-x4
Question 7
Question 9 Which of the following polynomials are written with their terms in the proper order?
Indicate the degree of the polynomial given below.
6x-5x3
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1. 6x5 -3x4 -x3 2. 2x4 +7x- 422 - x3 3. 3x2 + 7x4 -12x6
9
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Question 10 Which of the following polynomials are written with their terms in the proper order?
1. x3 -7x2 + 12x 2. x2 - 19+ 11x3
3. x+1
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Introduction to Polynomials 3 Shannon MacLean - MTH-S42 Module 1 (16719) Answer Sheet
Question 1 1 and 2 only Question 2 2 and 3 only
Question 3 2
Question 4 2
Question 5 4 Question 6 3 only Question 7 1 only
Question 8 1 only Question 9 3
Question 10 1 and 3 only
-
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Question Advanced Mathematics
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Introduction to Polynomials 1 Shannon MacLean Question 1 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 4
Identify the variable and the constant in the polynomial
given below.
2-x2 +3x2 - 4x+2x +6+ 4x2 = ?
9x3 +5x2 - 5
Question 2
Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 5 Combine the like terms of the polynomial given below and. identify the leading coefficient of the resulting polynomial.
2x2 -2 -3+2x+6+4x2 -10-2 = ?
Question 3 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 6 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial. 3x2 +5x+6-2x2 +2x-1 =?
2×3 -3x-2x3 - 1+3x+52 - 1 =?
9x3 -x-2x3 - 1+3x+5x2 - 5 =?
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Question 7 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 9
Identify the variable and the constant in the polynomial
given below.
4-3x2 +x+5-4x+ 7x2 = ? ₹ -4x+5
Question 8 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 10 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
≥ +3x+2x3 +4+23 - 2x2 -3x+6 =?
2x3 +5% +2x-62 -1 =?
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Introduction to Polynomials 1 Shannon MacLean - MTH-S42 Module 1 (16719) Answer Sheet
Question 1
6x2 - 2x+8 leading coefficient is 6
Question 2
7x3 + 5x2 + 2x-6 leading coefficient is 7
Question 3
5x2 -2 leading coefficient is 5
Question 4 variable is x constant is - 5 Question 5 -2x3 +6x2 +2x-7 leading coefficient is - 2 Question 6 x +7x+5 leading coefficient is 1
Question 7
4x2 - 3x+ 9
leading coefficient is 4
Question 8
4x3 - 2 + 10 leading coefficient is 4
Question 9 variable is x constant is 5
Question 10 2x3 - x2 +2x-1 leading coefficient is 2
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Question Advanced Mathematics
Math-Help-Services.com
Introduction to Polynomials 1 Shannon MacLean Question 1 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 4
Identify the variable and the constant in the polynomial
given below.
2-x2 +3x2 - 4x+2x +6+ 4x2 = ?
9x3 +5x2 - 5
Question 2
Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 5 Combine the like terms of the polynomial given below and. identify the leading coefficient of the resulting polynomial.
2x2 -2 -3+2x+6+4x2 -10-2 = ?
Question 3 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 6 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial. 3x2 +5x+6-2x2 +2x-1 =?
2×3 -3x-2x3 - 1+3x+52 - 1 =?
9x3 -x-2x3 - 1+3x+5x2 - 5 =?
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Question 7 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 9
Identify the variable and the constant in the polynomial
given below.
4-3x2 +x+5-4x+ 7x2 = ? ₹ -4x+5
Question 8 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
Question 10 Combine the like terms of the polynomial given below and identify the leading coefficient of the resulting polynomial.
≥ +3x+2x3 +4+23 - 2x2 -3x+6 =?
2x3 +5% +2x-62 -1 =?
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Introduction to Polynomials 1 Shannon MacLean - MTH-S42 Module 1 (16719) Answer Sheet
Question 1
6x2 - 2x+8 leading coefficient is 6
Question 2
7x3 + 5x2 + 2x-6 leading coefficient is 7
Question 3
5x2 -2 leading coefficient is 5
Question 4 variable is x constant is - 5 Question 5 -2x3 +6x2 +2x-7 leading coefficient is - 2 Question 6 x +7x+5 leading coefficient is 1
Question 7
4x2 - 3x+ 9
leading coefficient is 4
Question 8
4x3 - 2 + 10 leading coefficient is 4
Question 9 variable is x constant is 5
Question 10 2x3 - x2 +2x-1 leading coefficient is 2
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Question Matlab And Simulation
Assignment 1 (10 marks)
There are two questions in this assignment: Question 1 is an LP problem, Question 2 is an NLP problem.
Hint: First establish the mathematical model based on the lecture slides. Then get start with MATLAB. Get familiar with the MATLAB program codes provided, L1_ex1_1_simple.m and L1_ex1_3_simple.m or L1_ex1_1_standard.m and L1_ex1_3_standard.m. The simple version of these two codes do not include how to plot the feasible areas and are therefore more suitable for students who are not very familiar with MATLAB. Try to understand the functions in the programs by using MATLAB online help and reading the necessary document. Then obtain the graphical solutions to the following two questions by making necessary changes to the codes. Please go to the tutorial classes to know more about MATLAB, the modelling, and the detailed requirements. You must complete the MATLAB quiz in Week 0 before submitting Assignment 1, otherwise your assignment will be marked as a 0.
Question 1:
The local bookstore must determine how many of each of the four new books on photonics it must order to satisfy the new interest generated in the discipline. Book 1 costs $50, will provide a profit of $10, and requires 3 inches of shelf space. Book 2 costs $70, will provide a profit of $12, and requires 8 inches of shelf space. Book 3 costs $80, will provide a profit of $8, and requires 2 inch of shelf space. Book 4 costs $65, will provide a profit of $15, and requires 2 inches of shelf space. Find the number of each type that must be ordered to maximize profit. Total shelf space is 620 inches. Total amount available for ordering is $9500. It has been decided to order at least 20 Book 3.
(1) Establish the model of the optimisation problem. State clearly in words what the decision variables are, what the objective function and the equation/inequality constraints represent.
(2) Suppose the number of Book 3 is half the number of Book 1, and the number of Book 4 is fixed as 13, establish the model of the new optimisation problem.
(3) For the model established in step (2), obtain the graphical solution using MATLAB.
(4) Change one of the parameters to cause the optimal solution (optimal design variables) changes and solve the problem again.
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Question 2:
Determine the objective function for building a minimum-cost cylindrical tank of volume 60m3 and the height should be at least 2m longer than the radius, it should be noted that the cylindrical tank does not have a lid. If the circular ends cost $12 per m2 , the cylindrical wall costs $5 per m2 , the reinforcement cost for the base is $20 per m2, and it costs $30 per m2 for the protecting material over the whole surface (double sides). Additionally, the base requires an extra 10% of its total cost for transportation and installation fees.
(1) Establish the mathematical model of the optimisation problem. State clearly in words what the decision variables are, what the objective function and the equation/inequality constraints represent.
(2) Draw the graphs and find the optimal solution (graphical solution).
(3) Change one of the parameters to cause the optimal solution (optimal design variables) changes and solve the problem again.
(4) If this tank needs a lid, rebuild the mathematical model and solve the problem again.
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Assignment 1 Submission Guide
· Attempt two questions: one linear programming problem (questions 1) and one non- linear programming problem (questions 2).
· Write a short report in PDF document format. Submit the written code separately (MATLAB scripts) for each question you have attempted along with the report. Make sure to name the files with the question number and name the MATLAB script (.m extension file) with your student ID. Submit the files to Canvas TurnItIn using the multiple file upload option. For example, the three files could be: Assignment_1_DOM_13123456.PDF, Qestion_1_DOM_13123456.m and Qestion_2_DOM_13123456.m .
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. No marks will be given if you do not upload the MATLAB scripts along with the report.
· The assignment is worth 10 marks, each question is worth 5 marks.
· For question1:
o For sub-question (1), write the model of the optimisation problem (0.5 marks), describe the decision variables, objective function, and equality/inequality constraints (1 mark)
o Solve sub-question (2) (0.5 marks)
o For sub-question (3), find the optimal solution by the code of MATLAB and give an image of the graphical solution (2 marks)
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o For sub-question (4), find the optimal solution and write the values of the design variables, objective function, and equality/inequality constraints (0.5 marks). Given the corresponding code and the image of the graphical solution (0.5 marks)
· For question 2:
o For sub-question (1), write the model of the optimisation problem (0.5 marks), describe the decision variables, objective function, and equality/inequality constraints (1 mark)
o Solve sub-question (2), find the optimal solution by the code of MATLAB and give an image of the graphical solution (1.5 marks)
o For sub-question (3), find the optimal solution and write the values of the design variables, objective function, and equality/inequality constraints (0.5 marks). Given the corresponding code and the image of the graphical solution (0.5 marks)
o If this tank needs a lid, rebuild the mathematical model (0.5 marks) and solve the problem again (0.5 marks).
· Include the code with proper comments in line to explain each code line that you have written to solve each question and attach it with the report.
. For clarity, we might ask you to explain what you have written and how the code works. No mark will be given if you cannot explain the results and the code.
. Any suspicious plagiarism will be reported to the university for further investigation. And the mark will not be given until the investigation is finished.
. As stated in the subject outline, "Work submitted late without an approved extension is subject to a late penalty of 10 per cent of the total available marks deducted per calendar day that the assessment is overdue (e.g. if an assignment is out of 40 marks, and is submitted (up to) 24 hours after the deadline without an extension, the student will have four marks deducted from their awarded mark). Work submitted after five calendar days is not accepted and a mark of zero is awarded".
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