(ENGG 0001 Middle east College Engineering Science Questions

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Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP IN SEMESTER (INDIVIDUAL) ASSIGNMENT Module Code: ENGG 0001.1 Module Name: Engineering Science Level: 0 Max. Marks: 100 Instructions to Student  Answer all questions. Show all the steps of answer.  Replace “Z” with last two digits of your MEC ID Number. For instance, let your ID number is 20S12345, then the last two digits is 45. So Z = 45  Deadline of submission: 28/04/2021 23:59  The marks received on the assignment will be scaled down to the actual weightage of the assignment which is 50 marks  Formative feedback on the complete assignment draft will be provided if the draft is submitted at least 10 days before the final submission date  Feedback after final evaluation will be provided by 12/05/2021 Module Learning Outcomes The student will achieve the following LOs by completing the assignment successfully 1) 2) 3) 4) List the fundamentals of acoustics and identify the acoustically good buildings List the properties of ultrasonic waves and summarize its applications in engineering Demonstrate understanding of the mechanical properties of solids and liquids Explain the basics of heat and thermodynamics (Only Heat will be covered) Assignment Objective To assess learning emphasized on basic concepts of physics, problem solving skills and the ability to apply this knowledge in Engineering. Assignment Tasks Question 1: a. Intensity level of the sound is (𝒁 + 50) dB at 3 m from the speaker. Find the intensity level of sound at 5 m from the same speaker. Consider 𝐼0 = 10−12 𝑊/𝑚2 . (15 Marks) b. If a hall has a volume of (𝒁 + 7500)𝑚3, find the total absorption of the hall if the reverberation time of 1.5 sec is to be maintained? MEC_AMO_TEM_035_02 (5 Marks) Page 1 of 10 Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP Question 2: a. An auditorium of dimensions of (𝒁 + 50)𝑚 × (𝒁 + 10)𝑚 × 10𝑚 having a seating capacity of 800. What would be the reverberation time of the auditorium when it is full of audience, based on the following data? Consider the absorption of each member of the audience as 0.44 Sabine. (12 Marks) Surface Surface Area Absorption Coefficient Ceiling Walls Floor Doors Empty Plastic Chairs (𝒁 + 450) 𝑚2 600 𝑚2 500 𝑚2 (𝒁 + 20) 𝑚2 800 𝑚2 0.02 0.03 0.08 0.03 0.14 𝑠𝑎𝑏𝑖𝑛𝑒 /𝑐ℎ𝑎𝑖𝑟 b. In your own words, explain why the ultrasound could not propagates long distance in air medium compared with the liquid medium. (8 Marks) Question 3: a. A mass of (𝒁 + 𝟓𝟎) kg is hung on a steel wire of diameter (𝒁 + 𝟓) mm and the extension found is (𝒁 + 𝟏𝟎) mm. If the Young’s Modulus of the wire is 200 GPa, Calculate, i. the cross-sectional area of the fishing rope (3 Marks) ii. the tensile strain (7 Marks) b. A copper sheet of (𝒁 + 75) cm width, (𝒁 + 100) cm height, and (𝒁 + 0.5) cm thick is acted by a shearing force of 50 × 103 𝑁, as shown in figure below. If the shearing Modulus of Copper is 4.2 × 1010 𝑁/𝑚2 , find the followings: i. Shear Stress (5 Marks) ii. Linear Displacement (Δ𝑥) (5 Marks) 𝚫𝒙 height F Width Question 4: a. A spherical container of diameter 2 × (𝒁 + 50) m having a chemical is kept at 300 m below from the sea level. If the volume the container at that point is (𝒁 + 5) × 103 𝑚3 , find the pressure applied on the container. Consider the Bulk Modulus of chemical, is 2.0 × 109 𝑁/𝑚2 . (10 Marks) MEC_AMO_TEM_035_02 Page 2 of 10 Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP b. A metal plate lying on a liquid layer of thickness (𝒁 + 2.1) mm is moving at a speed 0.04 m/s when a force of (𝒁 + 22) 𝑁 is applied. Calculate the area of the metal plate. Consider the viscosity of liquid is 1400 centipoise. (6 Marks) c. What happens to the viscosity of air as its temperature increases? Explain your answer, in your own words. (4 Marks) Question 5: a. An iron sphere of mass (𝒁 + 300)𝑔 is kept in a container having boiling water (100 °𝐶). If the temperature of the sphere is 25.5°𝐶, how much heat energy is absorbed by the iron sphere? Consider the specific heat of iron as 452 𝐽/𝑘𝑔. (5 Marks) b. The wall of an industrial furnace is constructed from (𝒁 + 3) 𝑐𝑚 thick fireclay brick having a thermal conductivity of 1.7 W/mK. Measurements made during steady-state operation reveal temperatures of 530°𝐶 and 375°𝐶 at the inner and outer surfaces, respectively. Find the rate of heat loss through a wall which is (𝒁 + 5) cm by (𝒁 + 3) m on a side. (5 Marks) c. A plate (𝒁 + 𝟎. 𝟑) m long and (𝒁 + 𝟎. 𝟏) m wide, with a thickness of (𝒁 + 𝟏𝟐) mm is made from stainless steel (𝑘 = 16 𝑊/𝑚𝐾). The temperature at the bottom surface of the plate is 100 °𝐶 maintained by an electrical heater supplied by 220 V and 0.35 A. In a steady-state condition, assuming that the plate is perfectly insulated on all sides except top surface, find temperature at the top surface of the plate. (10 Marks) Rules & Regulations:       All resources should be cited using CU Harvard style. The final assignment must have a Title page, Table of Contents, References/ bibliography using CU Harvard Style and page numbers. Title Page must have Assignment Name, Module name, Session, your name, ID, and the name of the faculty. Softcopy in word format is to be submitted through Turnitin link on MEC Learn. Submission of Assignment with answers in Image format/hand written will not be accepted. Viva will be conducted after the assignment submission as per the dates informed earlier. Guidelines:  Assignment must be computer typed.  Font - Times New Roman  Font – Style - Regular MEC_AMO_TEM_035_02 Page 3 of 10 Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP      Font - Size - 12 Heading should be with Font Size 14, Bold, Capital and Underline. Explain with suitable diagrams wherever required. Diagrams must be drawn using suitable software or by pencil. Each student has to do the assignment individually. You can refer books in E-Library or use internet resource. But you should not cut and paste material from internet nor provide photocopied material from books. The assignment answers should be in your own words after understanding the matter from the above resources. Assessment Evaluation Criteria Classification And % Range Outstanding 91-100 Excellent 81--90 Very Good Quality 71-80 Good (Acceptable) 61-70 Adequate/ Satisfactory 51-60 Weak /Poor (all learning outcomes not adequately met) 0-50 MEC_AMO_TEM_035_02 Reflection and critical analysis. Highly competent analytical skills and reflective practice, demonstrating personal learning and growth, insight into required professional values and principles and professional development planning. Strong analytical skills and reflective practice used, demonstrating personal learning and growth, insight into required professional values, principles and competencies and professional development planning. Good use of analytical skills and reflective practice demonstrating personal learning and growth, insight into required professional values, principles and competencies and professional development planning. Acceptable use of analytical skills and reflective practice demonstrating personal learning and growth, insight into required professional values, principles and competencies and professional development planning. Adequate use of analytical skills and reflective practice demonstrating personal learning and growth, insight into required professional values, principles and competencies and professional development planning. Little use of analytical skills and reflective practice demonstrating personal learning and growth, insight into required competencies and/or professional development planning. Professional values and Knowledge and Understanding/ Application of Theory Extensive knowledge and depth of understanding of principles and concepts and /or outstanding application of theory in practice. Evidence of Reading Referencing and Bibliography Presentation, Grammar and Spelling Evidence of reading an extensive range of educational literature/research and where applicable workplace strategies, policies and procedures. Accurate referencing and bibliography correctly using appropriate referencing style Excellent presentation, logically structured, using correct grammar and spelling, excellent crossreferencing and links to supporting evidence Excellent knowledge and understanding of principles and concepts and /or excellent knowledge and understanding of the application of theory in practice Evidence of reading a wide range of educational literature/research and where applicable, workplace strategies, policies and procedures. Appropriate referencing and bibliography correctly using appropriate referencing style Good presentation, competently structured, using correct grammar and spelling, clear and easy to use links to supporting evidence Good knowledge or key principles and concepts and/or good knowledge of the application of theory in practice Evidence of reading a good range of educational literature/research and where applicable workplace strategies, policies and procedures. Generally well referenced with correct use of the appropriate referencing style Reasonable presentation, completely structured, acceptable grammar and spelling, acceptable links to supporting evidence Acceptable knowledge of key principles and concepts and/or knowledge of the application of theory in practice Evidence of reading an appropriate range of educational literature/research and where applicable, relevant workplace policies and procedures Adequate referencing. Generally accurate use of appropriate referencing style Adequate presentation and structure, acceptable grammar and spelling, adequate links to supporting evidence Adequate knowledge of key principles and concepts and/or satisfactory evidence of the application of theory in practice. Evidence of minimal reading of educational literature/research and where applicable relevant workplace policies and procedures Adequate referencing. Appropriate referencing style used but may contain some inaccuracies. Weak presentation , satisfactory structure, grammar and spelling, links to supporting evidence Little evidence of knowledge of key principles or concepts and/or little evidence of the application of theory in practice Little or no evidence of reading outside of the course textbook and/or reference to relevant work place policies and procedures Little or no referencing, incorrect style, or very inaccurate use of appropriate referencing style Poor presentation, grammar and spelling, links to supporting evidence and/or and/or and/or Unacceptable presentation, grammar and spelling, structure is Page 4 of 10 Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP principles not reflected in the submission. and/or Insufficient/no use of analytical skills and reflective practice demonstrating personal learning and growth, insight into required competencies and professional development planning No evidence of knowledge of key principles or concepts and/or no evidence of application of theory in practice No evidence of reading outside of the course textbook and/or reference to relevant workplace policies and procedures very poor, links to supporting evidence Important Policies to be followed 1. Student Academic Integrity Policy*:  MEC upholds the spirit of academic integrity in all forms of academic work and any form of violation of academic integrity shall invite severe penalty. Any benefit obtained by indulging in the act of violation of academic integrity shall be cancelled.  MEC also reserves the right to notify the appropriate law enforcement authorities of any unlawful activity and to cooperate thereafter in any investigation of such activity.  Faculty can conduct a viva to investigate and ascertain that the work submitted is student’s own work as per the guidelines for the same. A student can be given a maximum of 2 chances to attend the viva in such cases. It is expected that the student attends the viva during the first chance itself unless due to extenuating circumstances. If the student does not attend the viva in spite of being given 2 chances and fails to submit valid reasons, he/she will be awarded a fail in the module and this shall be counted as a case of academic integrity violation. All cases of violation of academic integrity on the part of the student shall fall under any of the below mentioned categories: 1. Plagiarism 2. Malpractice 3. Ghost Writing 4. Collusion 5. Other cases MEC_AMO_TEM_035_02 Page 5 of 10 Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP If the student fails a module and has a proven case of academic integrity violation in this module, the student is required to re-register the module. This is applicable to first and second offence of academic integrity violation of plagiarism type 1.1. First Offence of Academic Integrity Violation: 1.1.1. Plagiarism a. If a student is caught first time in an act of academic integrity violation during his/her course of study in any assignment other than project work and if the type of violation is plagiarism, then the student will be allowed to re-submit the assignment once as per the period allowed for re submission However, a penalty of deduction of 25% of the marks obtained for the resubmitted work will be imposed. b. Period of re-submission: The student will have to re-submit the work within one week (5 working days) from the date he or she is advised to re-submit. c. Re-submission of the work beyond the allowed period of resubmission will not be accepted and the assessment will be awarded a zero mark. d. If the re-submitted work (within the allowed period of resubmission) is also found to be plagiarized, then that assessment component will be awarded a zero mark. It shall also contribute to the total count of academic integrity violation for that student. e. If plagiarism is detected in UG Project work (Project 1, Project Planning and Project Design and Implementation), the above clauses do not apply, and the work will be summarily rejected. In these cases the student will be awarded a fail (F) grade and is required to reregister the module. 1.1.2. Malpractice / Ghostwriting / Collusion If a student is caught first time in an act academic integrity violation during his/her course of study for an assessment component irrespective of coursework or end semester and if the type of violation is Malpractice/Ghostwriting/Collusion, then the student shall fail the module. 1.2. Second Offence of Academic Integrity Violation: 1.2.1. Plagiarism a. If any student is caught second time in an act of academic integrity violation during his/her course of study and if the type of violation is plagiarism, then the student will not be allowed to resubmit the work, and s/he will directly be awarded zero for the work in which plagiarism is detected. MEC_AMO_TEM_035_02 Page 6 of 10 Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP b. The student shall also receive a warning of suspension in such cases. 1.2.2. Malpractice/Ghostwriting/Collusion a. If a student is caught a second time in an act academic integrity violation for an assessment component irrespective of coursework or end semester and if the type of violation is Malpractice/Ghostwriting/Collusion, then the student shall fail the module. b. The student shall also receive a warning of suspension in such cases. 1.3. Third Offence of Academic Integrity Violation: a. b. c. d. If a student is caught a third time in an act of academic integrity violation for an assessment component irrespective of coursework or end semester then the student shall fail the module and also shall be suspended for one semester from the College, once the academic integrity violation case is confirmed by Institutional Assessment Review Committee. The student shall be suspended for the immediate subsequent semester and can register for modules only after having served the suspension period fully. This is also applicable for semesters offered in block mode. During the suspension period, the student shall have to mandatorily complete a course on academic integrity/writing before s/he can register for any modules. During the period of suspension, the student shall be allowed to attempt supplementary examinations if s/he is eligible for the same. S/he shall also be allowed access to all college facilities permitted for a regular student except for registering the modules. 1.4. Fourth Offence of Academic Integrity Violation: a. If a student is caught a fourth time in an act of academic integrity violation for an assessment component irrespective of coursework or end semester, the student shall fail the module and also shall be expelled from the College, once the case is confirmed by Institutional Assessment Review Committee. b. The student shall be expelled from the college and all access to the college facilities and premises shall cease to exist. The documents shall be released only after getting the NOC (No Objection Certificate) from Registration Office. c. `On termination, the student shall not be refunded any fees paid for the academic semester in which academic integrity violation was observed. 1.5. Other cases If a student commits an act of academic integrity violation as per the definition of “other cases” mentioned in the previous section or of a different nature, student’s case shall be forwarded to an Institutional Assessment Review Committee, Chaired by the Associate Dean, Academic Affairs. The committee shall investigate the case by means of a viva and/or a hearing of the parties concerned if required and shall take appropriate decision. The MEC_AMO_TEM_035_02 Page 7 of 10 Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP penalty that can be granted to a proven case of academic integrity violation which falls in this category of “other cases” can be a warning/component zero/ module fail/suspension/expulsion depending on the nature and gravity of the offence. 1.6. Types/Variations of cases of Plagiarism and associated actions Type 1: In case plagiarism is detected in any component or part submission (submitted at different times) of one assessment (assignment), the deduction in marks will be applicable for the whole assessment (assignment), even if only the component or part submission alone needs to be resubmitted. Type 2: In case plagiarism is detected in a group assessment, all students of the group will be considered as having committed an act of plagiarism irrespective of whether plagiarism is on account of the act of all or a few or only one member. The policy will then be applied to all students. If some students in the group are eligible to re-submit (first offence) and others are not eligible, only eligible students will be allowed to re-submit within a period of one week and the penalty will be applied as per the policy for each student according to his / her history of violations. Type 3: Combination of Type 1 and Type 2: In case plagiarism is detected in any component or part submission (submitted at different times) of a group assessment (assignment), the deduction in marks will be applicable for the whole assessment (assignment), even if only the component or part submission alone needs to be resubmitted. All students of the group would be considered as having committed an act of plagiarism irrespective of whether plagiarism is on account of the act of all or a few or only one member. The policy will then be applied to all the students of the group. If some students in the group are eligible to re-submit (first offence) and others are not eligible, only eligible students will be allowed to re-submit within a period of one week and the penalty will be applied as per the policy for each student according to his / her history of violation. Type 4: Variation of Type 1 and Type 2: In cases where the assessment consists of components or part submissions that could be a group assessment component (e.g. group assignment) and an individual assessment component (e.g. individual reflection), the following will be applicable: a. If plagiarism is detected in the group assessment component, all students of the group will be considered as having committed an act of plagiarism, irrespective of whether plagiarism is on account of the act of all or a few or only one member. The policy will then be applied to all students of the group. In such cases the group assessment component will be resubmitted. If some students in the group are eligible to re-submit (first offence) and others are not eligible, only eligible students will be allowed to re-submit within a period of one week and the penalty will be applied for each student according to his / her history of violation. MEC_AMO_TEM_035_02 Page 8 of 10 Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP b. If plagiarism is detected in the individual assessment component, the individual assessment component will be resubmitted - if the student is eligible for resubmission-. The policy will then be applied to that student alone. c. In both cases (a) and/or (b), the deduction in marks will be applicable for the whole assessment (assignment). 1.7. Types/Variation of Cases of Multiple Offences If student is caught with multiple violations of same or different nature in different modules of the same semester, they will be considered as one offence and student will be penalized for each violation according to the type of the offence. If student is caught with multiple violations of same or different nature in the same module of the same semester, then they will be considered as different offences and each will contribute to the overall count of AIV. The student then shall be penalized for each violation according to the count and type of each offence. * For further details Refer to MEC Student Academic Integrity Policy in Student Handbook. 2. Late Submission Regulations: It is the students’ responsibility to check all relevant timelines related to assessments. As per the Assessment Policy at MEC, late submissions are allowed for one week (5 working days) for all UG modules with a penalty. In such cases, a deduction of 5% of the marks obtained for the submitted work shall be imposed for each working day following the last date of submission till the date of actual submission. Assessment documents submitted beyond a period of one week (5 working days) after the last date of submission will not be accepted and will be awarded a zero for that assessment. In cases where the submission has been delayed due to extenuating circumstances, the student may be permitted to submit the work without imposing the late submission policy stated above. The extended period of submission will be one week from the original last date of submission. In such cases, the student is expected to submit the supporting certificates on or before the original last date of submission of the assessment and the decision of extension rests with faculty responsible for the assessment .The late submission policy shall be applied if the student fails to submit the work within one week of the original last date of submission. Students may contact their teachers for clarification on specific details of the submission time if required. 3. Research Ethics and Biosafety Policy To protect and respect the rights, dignity, health, safety, and privacy of research subjects involved including the welfare of animals and the integrity of environment, all student projects are expected to be undertaken as per the MEC Research Ethics and Biosafety Policy. Accordingly the following shall apply. MEC_AMO_TEM_035_02 Page 9 of 10 Engineering Science (ENGG 0001.1) – Spring - 2021 – CW (Assignment_1) – ALL – QP  Research and other enterprise activities shall be conducted by maintaining the high ethical standards consistent with national and international standards and conventions.  Any research at MEC that is categorized as high-risk research shall be subject to review and approval by the Research Ethics and Biosafety Committee.  Research activities involving collection of human or animal tissues and manipulation of microbial, animal or plant cells shall be subject to review and approval by the Research Ethics and Biosafety Committee.  Participants involved in research must be informed about the purpose of research and intended uses of research findings. Written consent must be obtained from people involved prior to the commencement of research.  Data obtained from participants must be treated with high confidence and should be used only for the intended purpose of research. MEC_AMO_TEM_035_02 Page 10 of 10
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CW (Assignment_1) – ALL – QP
Engineering Science
(SESSION)

(NAME)
(ID NUMBER)
(NAME OF FACULTY)

Table of Contents
Title Page................................................................................................................... 1
Question 1 ............................................................................................................. 3-4
Question 2 ............................................................................................................. 4-5
Question 3 ............................................................................................................. 5-8
Question 4 ........................................................................................................... 8-10
Question 5 ......................................................................................................... 10-11

2

Question 1:
a.) Intensity level of the sound is 113 dB at 3m from the speaker. Find the intensity level of
sound at 5m from the same speaker. Consider I 0 = 10−12 W

m2

Assuming that the source of sound is a point source, then the relationship between the
intensity and its distance from the point source is:
Ir 2 = k

where I is the intensity, r is the distance from the point source, and k is a constant. Also,
the relationship between the intensity level of the sound and the intensity is given by:

 I 

 I0 

 = 10log 

where  is the intensity level of the sound, and I 0 is the reference intensity. Solve for
the intensity at the distance of 3m from the speaker:

 I 

 I0 

 = 10log 



I

113 dB = 10log  −12
 10 W 2 
m 

I = 0.1995W

m2

Solve for the constant k:
0.1995W

m2

(3m) 2 = k

k = 1.796W
Solve for the intensity 5m from the speaker

I (5m)2 = 1.796W
...


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