i. Assuming you are new engineer working in R & D division at manufacturing company which has decided to evaluate CAD/CAM system to adopt in your company in order to meet Industrial 4.0. (Select your company such plastic moulding, automotive, aerospace, marine etc). The company are required yourself to outline executive report for them to decided which suitable CAD/CAM system can be selected. Your report must discuss the suitable CAD/CAM system by referring to current trend which available can be accessed in the journals, articles, books, market/industrial report etc. You are assigned to this assignment with an individual work.

Q2.
a. List the difference between non-fusion and fusion forms of welding.
b. Describe how the rightward or backward welding technique is done and stating its advantages
and also when it is mainly used.
c. With the aid of a labeled diagram, describe the gas welding process.
d. (i) Give one major reason for the use of fluxes during welding. Give one example.
(ii) Mention any two hazards that may occur in the welding workshop.

For a butanol combustion process (formation enthalpy -332,000 kJ / kmol) C4H10O with an excess of 25% air (reagents are at standard conditions T = 25 C, P = 1atm).

Determine:

a. Adiabatic flame temperature

b. If the products come out at a temperature of 600 K, determine the heat generated in the combustion chamber.

Q1

In the aerospace industry, the material cost is small in relation to the total fabricated cost of the material. If we assume approximately 10% of the total value of a pound saved on a sattelite may be spent on raw material, how much can we spend (in dollars per pound) on raw material?

Q2

Using the result of the previous question, which of the following materials can be justified for use in fabrication of a sattelite if a large majority of the sattelite will comprise the material selected?

nickel-based superalloys

silver

palladium

gold

high-strength composites

Q3

Based on the analysis of this section, at most approximately $.20/lb can go toward raw material cost in the fabrication of rail and ship transit carriers. What is the most expensive material that is feasible in the fabrication of the structural components in this sector?

wood

concrete

carbon steel

plastic

PLEASE I NEED CORRECT  ANSWER

Explain how the load conditions related to shear diagram, and how shear conditions related to moment diagram.

You are considering two columns with identical dimensions. One is constructed out of steel, the other aluminium, which will buckle at a smaller load? The euler formula for critical buckling force for column, pin jointed at both ends is given by Pcr = pi^2 EI/ L^2 if the end of the column are constrained to prevent rotation, how will the buckling force change?

Q2 The pump of a LiBr--water absorption refrigeration system delivers (0.7 kg/s) of
solution. The absorption system operates at the following temperatures: generator (I 10 'C);
condenser (40 'C); evaporator (lO 'C); and absorber (33 'C). Calculate;
(a) The refrigerant mass flow rate, the refrigerating capacity, and the COP of the system.
(b) The COP of an ideal heat-operated refrigeration system that operates with the same
temperatures.

We will find the Moment of Inertia Moment and Polar Moment of Inertia of a U profile that will determine its dimensions by ourselves.

Excellent combinations of hardness, strength, and toughness are obtained from
tempered martensite. An employee in a heat treatment facility austenitized an eutectoid
steel at 9500C for 45 min and finally allowed the steel to slowly cooled in furnace. Do
you think the required tempered martensite structure was produced? If not, support
your answer with a detail heat treatment that can be employed for the steel.

Water enters the condenser of surface type; the temperatures of the water that is used to cool the steam is 17oC and 28oC respectively. The pressure of the condenser is at 0.055 bar and 0.87 dry fraction. The overall heat transfer coefficient in the condenser is 3 kW/m2.oC. The condenser has three passes and tubes used have 17.6 mm internal diameter and 20 mm external diameter. If the flow area is 1.3 m2, Design the condenser. If the condenser is used to condense 240 tons of steam per hour.

1. You are preparing a spaghetti dinner for guests when you realize that your heat transfer training can be used to answer some fundamental questions about the process. The pot you are using holds four liters of water. The atmospheric pressure is 101 kPa. When on its high setting, the electric stove heating unit consumes 1.8 kW of electrical power of which 20% is transferred to the surroundings, rather than to the water. The pot is made of 4 mm thick polished AISI 304 stainless steel and it has a diameter of 0.25 m. The burner diameter is also 0.25 m.

a.) How much time is required to heat the water from 15 ^◦C to its boiling temperature?

b.) What are the temperatures of the outside and inside surfaces of the bottom of pot while the water is boiling?