It is required to select a compressor for a car manufacturing plant which uses Pneumatic tools and equipment 24 hours a day continuously. Therefore, following tasks are required:
a. Research different compressors and select the most suitable compressor for such application.
b. Provide the diagrams, specifications and detailed information for the selected compressor.
c. Justify your selection with appropriate reasoning and comparisons.
d. Suggest alternative compressor type/s which could also be used for this application with justifications.

It is required to select a ‘chemical feed pump’ to transport corrosive chemicals such as potassium permanganate, ferric chloride and fluosilicic acid. Therefore, following tasks are required:
a) Research different pumps and select the most suitable pump for such application.
b) Provide the diagrams, specifications and detailed information for the selected pump.
c) Justify your selection with appropriate reasoning and comparisons.
d) Suggest alternative pump/s which could also be used for this application with justifications.

explain why constant volume combustion gives a higher indicated fuel conversion efficiency than constant pressure combustion for the same compression ratio.

Why is HTST better than LTLT? A juice product is needed to be heat processed to achieve 2 log reduction in microbial count. It could be accomplished by heating the juice product either at 65 or 75 C. The D value for bacteria cell death at 65 C is 10 S and z value is 10 C. D value for ascorbic acid degradation at 65 C is 50 s and Z value is 20 C. The heat transfer penetration data at 65 and 75 C is given below. Determine ascorbic acid losses at 65 C and 75 C

65 °C         75 °C

time, temp   time, temp

0 30 °C        0   30 °C

30 50 °C      10 45 °C

60 60 °C      20 61 °C

90 65 °C      30 75 °C

120 40 °C    40 40 °C

Comparison between the four different materials(steel, copper,brass and Aluminum):

a. Which material has the greatest tensile strength? How did you measure that?

b.Which material has the highest yield strength?

c. Which material the greatest modulus of elasticity? How did you measure that?

d. Which material has the highest resilience? How did you measure that?

e. Which material has the highest toughness? How did you measure that?

f. Which material the stiffest one? How did you measure that?

g. Which material the most brittle one? How did you measure that?

h. Which material the most Ductile one? How did you measure that?

i. Which one of the four materials has the best mechanical properties?

Introduction: write about tensile test concept and it’s important. (about 1 page)

Explain How fuel system components works:

Booster pump-

Jet Pump-

Surge tank-

Crossfeed valve-

Jettison valve-

Capcitance fuel gauge-

Determine the Modulus of Elasticity (unit is in GPa) from an aluminium specimen?

Determine the 0.2% Proof Stress for aluminium (in MPa)?

Calculate the Ultimate Tensile Strength (UTS) of aluminium. Given the maximum load of 15800N.

The Ultimate Tensile Strength of cast iron is (in MPa)? Given the max load as 23700N.

using the following data:

Millwrights in a factory need to suspend a machine weighting 10500ib from a beam
having a span of 12.0 ft so that a truck can back under it. Assume that the beam is simply
supported as its ends. The load is applied by the cables , each 3.0ft from a support . Design
a suitable beam. Consider standard wooden or steel beams or 1 of your own design.

Discuss the requirements for each of the following components and discuss which of the processes you would choose to make the product. Please provide references where possible.

1. Screwdriver.

An example is shown below:

Example: An ashtray

Select all materials possible in making ashtray e.g. stainless steel and explain the properties of stainless steel. Hence choose the best material based on production purposes.

Explain briefly all the process involved (e.g. casting, forging, etc) in making the product for the selected materials. Explain in detail the best process that your group had chosen for making of the product. (Eg: Molding, include diagram.)

Conclusion to why your group had chosen the materials and process for every item above.

Overall conclusion to the above case study e.g teamwork, what you had gained from the case study, etc.

Discuss the requirements for each of the following components and discuss which of the processes you would choose to make the product. Please provide references where possible.

1. Bicycle Gears.

An example is shown below:

Example: An ashtray

Select all materials possible in making ashtray e.g. stainless steel and explain the properties of stainless steel. Hence choose the best material based on production purposes.

Explain briefly all the process involved (e.g. casting, forging, etc) in making the product for the selected materials. Explain in detail the best process that your group had chosen for making of the product. (Eg: Molding, include diagram.)

Conclusion to why your group had chosen the materials and process for every item above.

Overall conclusion to the above case study e.g teamwork, what you had gained from the case study, etc.

Water at a flow rate of 20,000 kg/h will be heated from 20°C to 35°C by hot water at 140°C. A 15°C hot water temperature drop is allowed. A number of 3.5 m hairpins of 3 in. (ID = 0.0779 m) by 2 in. (ID = 0.0525 m, OD = 0.0603 m) counter flow double-pipe heat exchangers with annuli and pipes, each connected in series, will be used. Hot water flows through the inner tube. Fouling factors are: Rf i = 0.000176 m² ? K/W, Rfo = 0.000352 m² ? K/W. Assume that the pipe is made of carbon steel (k = 54 W/m ? K). The heat exchanger is insulated against heat losses. Assume that the allowable pressure drop in the annulus is 10 kPa. The velocity of cold water through the annulus will be around 3 m/s, which would require a large pressure drop to drive the cold fluid through the inner tube. The pressure drop could be reduced by using several units with cold water flowing in four parallel units and hot water flowing through the inner tube in series. Calculate: a. The overall heat transfer coefficient b. Pressure drop in the annulus c. The appropriate mean temperature difference.

9(a). How can a Zigbee based WSN avoid interferences from another Zigbee based sensor network in the same region?

(b). How the power in expressed in decibel, and what are the approximate power levels of (i) FM; (ii) Microwave Oven; (iii) Blue tooth; (iv) Wireless network.

3(a) What is the operating frequency of Zigbee and what is the wavelength?

(b). Explain the data format for the Zigbee protocol.