EMI_PD_Research Engineer August 2023_V3 (1)

QUESTION 3 A Type I offshore life jacket (i.e. personal flotation device) is the type worn by commercial fishermen - it is designed for extended survival in rough, open seawater. Consider such a life jacket that uses an impermeable foam material with a density of 32 kg/m³ - the other parts of the life jacket (straps, fasteners, etc) weigh 0.6 kg and are of negligible volume to the design. a) Draw a free body force diagram for the life jacket. b) Determine the minimum volume of foam material (in L) that is needed for the life jacket in order to provide a minimum 98 N net upward force when it is fully submerged in seawater (as required by US Coast Guard regulations).

Mech. Engg. Dept. 4th year 2022-2023 Solar Energy Spring course MEC364 Dr. Mahmoud U. Jasim Review/Recap Sheet Q1- Answer with true or false and rewrite the false statements completely in correct form, otherwise no mark will be put on the false statements. 1 2 To represent a location on earth surface you need to define its altitude and longitude angles. 3 Solar zenith and solar incidence angles have the same value for horizontal surface. At sunset time the value of solar altitude angle is maximum. 4 The angle which represents the inclination of a given surface is the zenith angle 5 6 7 8 When the absolute value of sun-wall azimuth angle exceeds 90' this means that the sun rays are reaching the receiving plane. The solar irradiance and the solar irradiation have the same physical meaning. In the case of clear sky weather, the beam solar irradiation on a horizontal surface is less than the diffused irradiation. The total solar radiation received by a tilted surface is the same as that…

XYZ Company Ltd has consulted your firm Zig-Zag Energy over an intention to generate electricity in Ghana. Being the senior project engineer for Zig-Zag Energy, management has asked you to prepare a detailed technical report in respect to the project. a) Discuss the major factors to take into consideration when consulting on such projects.                                                                                                           A tank containing air is stirred by a paddle wheel. The work input to the paddle wheels is 2000KJ and the heat transferred to the surrounding from the tank is 6000KJ. b) Determine the change in the internal energy of the system                                              There has been a sharp differences between the board of Blue-Blue Energy over which of the energy sources (hydroelectric power plant-HEP and Coal fired plant) is best for power generation. As an energy expert, you were confronted by the debating faction for your opinion. You…

LAST DIGIT IS 5, So delta t = 10 Major: Mechanical Engineering   Course: ThermoDynamics

University of Babylon College Of Engineering -Al-Musayyab Automobile Production Semi-First Semester 2023-2024 3rd Stage Name: 1.In automobile classification, which factor is commonly used to categorize vehicles? Ay Fuel Efficiency B) Engine Size Drive Type D) Passenger Capacity 2. What industrial surface modification process is described, which aims to enhance the wear, corrosion, and fatigue resistance of steel components such as crankshafts? A) Hardening BNitriding Annealing D) Galvanizing 3.What is the purpose of the cylinder honing method described in the passage? A) To increase imperfections in the bore By To remove glaze and minor imperfections C) To rotate the spindle for reboring D) To mount graded grinding stones 8.What are some functions of the chassis frame mentioned in the passage? A) To operate the brakes and acceleration B) To carry passengers or goods, support body and engine Toad C) To withstand road conditions and cornering forces D) To house the gearbox and engine…

Create a reading outline for the given text "STRESS and STRAIN".

A small company is considering an investment of $2000 that can save 3000 kWh of electricity per year at $0.15/kWh while the annual maintenance fee is $50. The project has a lifetime of 8 years and the salvage value is 10% of the initial investment. -:) What is the simple payback period (SPP) (in years)? Blank 1 (Your choices: 4.0, 4.2, 4.6, 5.0, 5.2) -:) With an annual discount rate is 12%, what is the discounted payback period (in years)? 6.5 (Your choices: 5.9, 6.5, 7.6, 8.1, 8.9) -:) With an annual discount rate is 12%, what is the benefit-cost ratio (BCR)? (Hint: Benefit = Annual saving – Maintenance; Cost = Initial investment - Salvage) Blank 3 (Your choices: 0.92, 1.04, 1.12, 1.25, 1.43) Blank 1 Blank 2 Blank 3 Add your answer Add your answer Add your answer

Pls.answer thank you! A classroom that normally contains 40 people is to be air-conditioned with window air-conditioning units of 5 KW cooling capacity. A person at rest may be assumed to dissipate heat at a rate of about 360 KJ/hr. There are 10 light bulbs in the room, each with a rating of 100 watts. The rate of heat transfer to the classroom through the walls and the windows is estimated to be 15,000 KJ/hr. If the room air is to be maintained at a constant temperature of 21°C, determine the number of window air-conditioning units required.

Q 1. Briefly explain the different categories of torts law. As an engineer, how the tort law is important for your professional services?

1. Concept questions in forms of multiple choices, filling blanks, and/or computations. a) Generally, the neutral axis of a curved beam under bending does not pass its centroid. True False False b) The transverse shear stress is significant in a slender beam. True_ c) A fixed-end beam is easier to buckle than a fixed-free end beam to buckle. True_, False_ d) Distortion energy theory is mainly for the torsion failure analysis. True False e) The fracture toughness obtained from a thin sheet specimen could be higher than that from a thick block specimen assuming that the same material is tested. True False

Please Use excel Shee t Note:- • Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. • Answer completely. • You will get up vote for sure.

ENGINEERING MECHANICS (DYNAMICS)100% GUARANTEE UPVOTE IF ANSWER IN 1 HOUR AND 30 MINUTES.. COMPLETE SOLUTION SHORTCUT IF NECESSARY

Problem 2.3 The following problem can be solved using the generalized conservation and accounting principle to determine if a recycling plant is profitable annually. Operating information: ● ● The plant operates 9 hours each day, 5 days each week, and 48 weeks each year. The plant purchases 30 tons of aluminum (at a rate of $0.02/lb) during each operating week. The plant has 5 full-time employees who are paid $18 per hour. All employees work during all of the plant's operating hours. The plant produces 7 bales of recycled aluminum per day, which it sells for $950 per bale. [Note: 1 ton = 2000 lb] Answer the following questions: (c) In order to determine the plant's annual profitability, would one be interested in studying the instantaneous rate of change in "stuff" (i.e. rate form) or the total change in "stuff" over an interval (i.e. finite-time form)? (d) On a system diagram (hint: think dashed lines!), use labeled arrows to identify each individual input and output of "stuff". (e)…

Problem 2.3 The following problem can be solved using the generalized conservation and accounting principle to determine if a recycling plant is profitable annually. Operating information: ● ● The plant operates 9 hours each day, 5 days each week, and 48 weeks each year. The plant purchases 30 tons of aluminum (at a rate of $0.02/lb) during each operating week. The plant has 5 full-time employees who are paid $18 per hour. All employees work during all of the plant's operating hours. The plant produces 7 bales of recycled aluminum per day, which it sells for $950 per bale. [Note: 1 ton = 2000 lb] Answer the following questions: (a) Identify the system (in words). (b) Identify the "stuff" you are accounting for in this analysis. (c) In order to determine the plant's annual profitability, would one be interested in studying the instantaneous rate of change in "stuff" (i.e. rate form) or the total change in "stuff" over an interval (i.e. finite-time form)? (d) On a system diagram (hint:…