Consider the parallel planes of infinite extent normal to the page having opposite edges. The planes are in the environment of T_env = 300 K as shown

Using the appropriate view factor relations and the result for the opposing parallel planes, develop an expression for the view factor, F_1?2

Using the cross-string technique to determine the view factor, F_1?2

Calculate temperature T_l

Q) List down the factors that should be considered while designing a factory building? Will you prefer "L" shaped building over rectangular building for new plant? Why?

Definition of Work, Energy,Power, and Torque

In Gasoline Engine

1. an undulated surface that is designed to reduce friction by eliminating wear particles from the sliding interface. The interface is subjected to normal force N. The sliding speed is so low that the interfacial temperature rise is negligible relative to the melting point of the material. We are planning to use metals for the sliders.

a. Determine the optimum dimensions of the undulated topography.

b. Discuss the consequence of deviating from the optimum geometry.

2. A conical asperity is plowing the surface. Determine the coefficient of friction.

3.At the beginning of sliding, there are 10,000 particles of 1 micron in diameter between two flat Armco iron surfaces. The hardness of Armco iron is 1000MPa. After one day of sliding, the particles have agglomerated into 100 equal sized spheres. What would be the change in friction coefficient? Plowing is primarily responsible for friction. State your assumptions clearly.At the beginning of sliding, there are 10,000 particles of 1 micron in diameter between two flat Armco iron surfaces. The hardness of Armco iron is 1000MPa. After one day of sliding, the particles have agglomerated into 100 equal sized spheres. What would be the change in friction coefficient? Plowing is primarily responsible for friction. State your assumptions clearly.

4. A composite bearing material has been developed using uniaxial graphite fibers embedded in a polyurethane matrix. The fibers are perpendicular to the sliding surface. Estimate the coefficient of friction and wear rate of the composite when it is sliding against a 52100 steel sphere of 0.02 m in diameter. State your assumptions

5. You have developed a new copper alloy that has titanium diboride (TiB2) as second phase particles. The total volume fraction of TIB2 is 3 %. The particle size is uniform throughout the matrix of copper. You made five samples by varying particle size as follows: 0.05 microns, 0.1 microns, 1 microns, 10 microns, and 100 microns.

(a) Estimate the hardness of each material.

(b) Estimate the wear coefficient of each sample, assuming that they wear by delamination.

State your assumptions clearly

Air flows through a 8-in-diameter, 60-ft-long adiabatic duct with inlet conditions of V1= 550 ft/s, T01= 650 R, and P1= 50 psia. For an average friction factor of 0.03, determine the velocity, temperature, and pressure at the exit of the duct. Please DO NOT merely copy other expert's work. I would like original work.

a) An open cycle gas turbine engine consists of a compressor, a combustion chamber and a two-stage turbine with a re-heater. The gas enters the compressor at a temperature of 15 C. The pressure ratio of the compressor, which is 90% efficient, is 12. The combustion gas enters the first stage turbine at 1100 C. Both stages of the turbine are 95% efficient. The first stage has a pressure ratio of 4, whereas that of the second stage is 3. The re-heater heats the gas to 1050 C. Assume that the specific heat at constant pressure is equal to 1.005kJ/kgK during compression, and equal to 1.130kJ/kgK during combustion and expansion.

i. Draw the T – s diagram for the cycle marking all necessary state points and given data.

ii.Evaluate the cycle efficiency.

iii. The required power output of the engine is 100kW. Calculate the required mass flow rate of gas.

(b) A heat exchanger is now added to the system in (a). The heat exchanger allows 80% of the maximum possible heat to be transferred.

i. Draw the complete plant for this system, marking the necessary state points and the flow of gas through the system.

ii. Re-evaluate the cycle efficiency, and mass flow rate.

a. Explain the operation of thermodynamic systems i.e. open system and closed system with the aid of diagrams and examples.

b. Define the term 'property of a substance' in a thermodynamic system and state the main difference between intensive and extensive properties with examples.

Evaluate the polytropic process parameters by

a. writing out the relationship between pressure and volume

b. deriving the expression for work flow

c. relating polytropic index 'n' with different types of processes in the form of graph

MERMED Inc. is a medical device manufacturer.

The company’s headquarters is located in Houston, Texas. It is a global leader in developing, manufacturing, selling and servicing diagnostic imaging and therapeutic medical devices used to diagnose and treat cardiovascular and other diseases. MERMED earned $300 million of revenue in 2015, while employing more than 10,000 people worldwide. One of it’s manufacturing plants is located in Dingle, Co. Kerry, Ireland. Tom Jones is the plant manager at the Dingle facility.

The Dingle site runs 12 hour shifts, 7 days a week. It has 1000 employees. It manufactures a variety of of medical devices (including Class III devices). A number of it's products are sold in the US and European markets. The facility has a Quality Management System in place. Their Quality Management System is in compliance with ISO 13485:2016 and 21 CFR 820. Their facility is frequently audited by Notified Bodies and the FDA.

The site was recently audited by corporate. The corporate auditing team were checking the site's compliance with ISO 13485:2016 and 21 CFR 820. The auditors found a number of potential non-conformances to  ISO 13485:2016 and 21 CFR 820.

You must complete 4 tasks (for each of the 5 incidents/questions):

1.   Review each of these potential non-conformances (5 incidents in total)

2. Determine if they are non-conformances against the requirements of the ISO13485:2016 AND 21 CFR 820.

3. If they are non-compliances, write down the specific clause numbers in ISO 13485:2016 AND specific section number of 21 CFR 820 which is applicable (write down the main clause/section in each regulation that the non-compliance is against).

Note:  ISO 13485:2016 and 21 CFR 820 are available in the "Additional Resources" section, under the section heading "Quality Systems Regulations (EU and US)" (contained within Section A Medical Device Regulatory Affairs).

4. Briefly EXPLAIN your decision in 100-170 words.

QUESTION 4

The operation of a weighing scale (equipments ID 186749) was reviewed by the inspector in the Box Packing section. The weighing scale was in use during the current shift. The operating procedure (SOP18654) for the scale states that it must be calibrated at the beginning and end of each shift. The operating procedure states that that the calibration of the scales is recorded in a log book(Calibration Log for ID 186749 ). The inspector asked to review this log book. The maintenance technician who was interviewed said that the log book was held by the maintenance technician on the night shift and he always kept it in his desk drawer which was locked.

Case Heavenly Chocolates Web Site Transactions .

Heavenly Chocolates manufactures and sells quality chocolate products at its plant and retail store located in Saratoga Springs, New York. Two years ago, the company developed a Web site and began selling its products over the Internet. Web site sales have exceeded the company’s expectations, and management is now considering strategies to increase sales even further. To learn more about the Web site customers, a sample of 50 Heavenly Chocolate transactions was selected from the previous month’s sales. Data showing the day of the week each transaction was made, the type of browser the customer used, the time spent on the Web site, the number of Web site pages viewed, and the amount spent by each of the 50 customers are contained in the file named Shoppers.

A portion of the data is shown in the table that follows:

Heavenly Chocolates Web Site Transactions Heavenly Chocolates would like to use the sample data to determine whether online shoppers who spend more time and view more pages also spend more money during their visit to the Web site. The company would also like to investigate the effect that the day of the week and the type of browser have on sales.

Managerial Report

Use the methods of descriptive statistics to learn about the customers who visit the Heavenly Chocolates Web site. Include the following in your report.

1.Graphical and numerical summaries for the length of time the shopper spends on the Web site, the number of pages viewed, and the mean amount spent per transaction. Discuss what you learn about Heavenly Chocolates’ online shoppers from these numerical summaries.

2.Summarize the frequency, the total dollars spent, and the mean amount spent per transaction for each day of week. What observations can you make about Heavenly Chocolates’ business based on the day of the week? Discuss.

3.Summarize the frequency, the total dollars spent, and the mean amount spent per transaction for each type of browser. What observations can you make about Heavenly Chocolate’s business based on the type of browser? Discuss.

PLEASE SHOW WHOLE WOORKBOOK PHOTO AND SHOW EXCEL FORMULAS. IF ANY CHARTS OR GRAPHS ARE USED PLEASE ADD A TEXT BOX WITH HOW YOU GENERATED THE ITEM. Thank you!

Describe:

-Different pressure fields to start the solution of the momentum equations for the computational process

-The differences between correcting the velocities with a velocity potential versus pressure correction.

-The different features associated with the Beam-Warming method and multi-dimensional factorization

2. A centrifugal pump running at 750 rpm with a 1-m-diameter impeller generates

the following pressure rise and flow rate data while pumping water at room temperature:

?(dot)[m^3/s]= [0, 0.0278, 0.0417, 0.0556, 0.0694, 0.0833, 0.0903, 0.0972]

?P [kPa]= [361, 349, 328, 293, 230, 145, 114, 59]

Estimate the pressure rise and flow rate for impeller speeds of 500 and 1000 rpm using the 750 rpm data. Plot pressure rise (y-axis) vs flow rate (x-axis) for all three pump speeds and include all data on a single graph.

1. For airflow through a fan, the mechanical energy balance with fan work along with conservation of mass are:

-W(dot)fan=sum((m(dot)_exit)*(e_exit)) - sum((m(dot)_inlet)*(e_inlet))

so...

0=sum(m(dot)_exit) - sum(m(dot)_inlet)

Using the mechanical energy balance and conservation of mass, show that the theoretical fan power added to the air is flow rate multiplied by the pressure rise:

W(dot)fan=?*?*P

The inside temperature of a wall in a dwelling is 19°C. If the air in the room is at 21°C, what is the maximum relative humidity, in percent, the air can have before condensation occurs on the wall?