Exam2-8

In project management, which of the following element is used to meet project objectives? a)time b)cost c)Customer satisfaction d)All the above

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True, False or Uncertain. Explain your answer. Own wage elasticity JELLlincrease if product demand elasticity n? is high. In short run, when there is an increase in wage rate, each firm will hire less labor and so the industry labor demand is simply the horizontal summation of firm's labor demand. а. b. Labor demand is represented by the marginal revenue produce schedule (MRP) when we have competitive product market while it will be represented by the value of marginal product schedule (VMP) when we have a product market monopolist. When elasticity of substitution, SLK, increase that means the L and K are less substitutable, and the isoquant will be L-shaped. Minimum wage imposed by the government is always bad for the economy because it increase unemployment and deadweight loss. с. d. e. 3.

A pulley’s actual mechanical advantage is 9.30 and you are using it to raise containers weighing 18,400 N to a height of 16.0 meters. You need to pull out 160 meters of cable to lift the crates. A) force is required to lift the container   B) what is the output work done   C) What is the pulley efficiency

a) Capacity planning involves the determination of the number and type of machines (or processors) needed to meet the demand requirements of customers True False  b) Capacity planning requires careful analysis of the trade-off between the initial purchase costs and long-term operating costs of the machines True False c) Efficiency rating is a measure of the productivity of a machine (or processor) True False

Assignment A company manufactures two products X and Y, which require the following resources. The resources are the capacities machine M1, M2, and M3. The available capacities are 50, 25, and 15 hours respectively in the planning period. Product X requires 1 hour of machine M2 and 1 hor of machine M3. Product Y requires 2 hours of machine M1, 2 hours of machine M2 and 1 hour of machine M3. The profit contribution of products X and Y are $ 5 and $ 4 respectively. 1- Formulate the above problem as (LP) and set up the standard linear programming model and represent the information in a table. 2- Solve the problem by using the graphic method. Does the problem represent a special case of linear programming ..Show this case? 3- Identify the feasibility area solution. 4- How many units of each type of product should be produced?

2b) How many weeks would the project, in the beginning of its 7th week, be behind or ahead of the schedule and when would be the estimated time to completion?

THIS SUBJECT IS DYNAMICSSHOW COMPLETE AND CLEAR SOLUTION

Quality has been defined as customer satisfaction (or "fitness for use"). Quality can also be defined as "conformance to specifications". In theory, if you create the right specifications and then manufacture a product that meets these specifications, you should achieve customer satisfaction.  Consider the following four scenarios for a particular product: A) Conforms to specifications and is competitive in its adequacy.   B) Conforms to specifications and is not competitive in its suitability.    C) It does not conform to specifications and is competitive in its education.   D) Does not conform to specifications and is not competitive in its education.   Which of these are not, in theory, feasible, but in practice occur and cause a lot of conceptual confusion?  Can you cite some examples?

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1) volume : 590 2) amount of salt :7.8 3) pumping speed : 6.2

Engineering design is a sequential process such that the design team will need to complete one complete cycle before revisiting the earlier step for potential revision.

2.1 You are tasked with planning of maintenance tasks at a water treatment facility. A critical pump has failed unexpectedly, causing significant downtime. Meanwhile, another pump of the same type has been operating without any issues. Illustrate using a diagram the planning process that highlights the difference between a maintenance task for an asset that has failed and a maintenance task that prevents failure from occurring. (6) 2.2 You are the working at a power generation plant. Over the past six months, the plant has experienced inconsistent performance from its critical assets, resulting in occasional production losses. The maintenance team recently implemented a new maintenance strategy to address this issue. Indicate the different methods to consider when assessing the effectiveness of the maintenance strategy. (3) 2.3 At a manufacturing facility, operators are primarily responsible for running production equipment, while the maintenance team handles all repairs and…

Q2: An energy engineer decided to product a solar energy cell at an industrial facility. The initial cost of the production line is $ 465,000, the fixed overhead $ 25,000 per year and variable cost $ 25 per cell. The expected revenue is about $ 90 per unit and annual estimated produced unit are 2500-cells with an interest rate 8%: a) What is simple and discounted payback period? b) What is the production level to make simple pay back period equal to 2 years?

A force is conservative if the work done by the force A) is independent of the path. B) Is dependent on the path. C) Depends on the optimum positions in the path. Could be either A or B

In machine design we usually compare the equivalent stress of the component with the: a) Allowable stress b) Machine stress c) Force d) Moment e) Torque

Operational research is a scientific approach for decision making that seeks to determine the best design under the constraints. Select one: O True O False

What are the facts count for the endurance limit modifying  a) Material b) Manufacturing c) Environment d) Design e) All of the above

QUESTION 1: 1.1) Select the material that will assist the best in conducting heat from point A to point B: A) Aluminium alloy B) Bronze C) Quartz D) Iron 1.2) Which of the following options will maximze thermal contact resistance: A) Applying a thermally conducting liquid on the surfaces before they are pressed against each other B) By inserting a soft metallic foil such as tin, silver, copper, nickel, or aluminum between the two surfaces C) All of the above D) None of the above 1.3) True/False: Effectiveness of a single fin is the ratio of the total heat transfer from the finned surface to the heat transfer from the same surface if there were no fins. 1.4) True/False: The heat flux in a circular tube with laminar forced convection will be higher near the inlet of the tube and gradually decreases to the fully developed value. 1.5) Fill in the blanks: A body whose surface properties are independent of wavelength is said to be a one for all wavelengths, the emissivity of a_ - The…

C)If both cyclists have 170 mm cranks on their bikes, what will be the mechanical advantage (considering only the movement of the feet with a constant force for walking and riding), in percent, that each rider will have achieved over walking the same distance? (This can be found by dividing the distance wallked by the distance the feet move in riding.)

Four consumers are willing to pay these amounts for haircuts, and four haircutting businesses have these costs: Consumers' Willingness to Pay Firms' Costs Edison: $45 Firm A: $40 Kevin: $25 Firm B: $20 Maria: $15 Hilary: $35 Firm C: $10 Firm D: $30 Each firm has the capacity to produce only one haircut. For efficiency, should be given. Which businesses should cut hair? Check all that apply. Firm A Firm B Firm C Firm D Which consumers should have their hair cut? Check all that apply. Edison Hilary Kevin Maria The maximum possible total surplus is $

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:…

*Problem 4: A spring is fixed at the top and extends down a frictionless incline of 20°. When a 5 kg block is attached to the free end of the spring, it stretches along the ramp by 15 cm before coming to rest. a) Draw a picture before-and-after picture of the situation b) Draw a FBD for the block c) Write out Newton's Second Law for the block. d) Find the equation for the spring constant. e) Plug in values to calculate the spring constant. (4:112 ) m.

A 5-ton spacecraft is running low on fuel and the spacecraft's propulsion force is given by F=5000−2x (The instant the force reaches zero, the fuel runs out and the force is forever zero.) Assuming that the change in the ship's mass due to fuel loss is negligible, determine: a) Graph the force versus position and tell where the fuel ends. b) How much energy was available in the fuel? c) If the ship starts from rest, what is the fastest speed the ship can reach?

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A company uses various machines in the preparation of ice cream. The firm has been successful until recently when it noticed growing repair expenses for the various machines it uses. Over the past 20 months, the machines have broken down at the rate indicated in the following table:   Each time a machine breaksdown, the company estimates that it loses an average of US$300 in production time and service expenses. Should the company opt to purchase a service contract for preventive maintenance by Angeles Machineries Inc., (AMI) there will still be breakdowns, averaging one breakdown per month. The price for this service by AMI is US$150 per month.   a. If the company continues as is, what is the expected no. of breakdowns based on past history? b. What will be the cost of breakdowns per month to the company without a preventive maintenance contract? c. What will be the cost of breakdowns per month to the company with a preventive maintenance contract? d. Should they engage the…

Operational research is a scientific approach for decision making that seeks to determine the best design under the constraints. true or false