A company manufactures 3 products: A, B, and C. Each unit of A requires 1 hour (hr) of engineering service, 10 hrs of direct labour, and 3 kilogram (kg) of material. To

1.) A rapid mixing rate process must provide a minimum hydraulic residence time of 50 sec. The water production rate is 0.70 MGD. Two identical tanks are provided in parallel. If the tanks are cylindrical with a liquid depth equal to the radius, the minimum liquid depth (ft) is most nearly: 2.) A lime soda softening plant produces a municipal supply of 7 MGD. The plant includes two clarifiers, each with a diameter of 75 ft and sidewater depth of 14 ft. The clarifier residence time (hr) for parallel operation is most nearly:- 3.) A rapid sand filter has four cells with the following dimensions: 4.) What is the most likely sequence of unit operations and processes for a surface water treat facility? 5.) A lime soda softening filtration plant produces a municipal supply of 6.5 MGD. The plant includes six filters of a surface area of 225 ft² per filter. The design filtration rate (gpm/ft²) with one unit offline is most nearly: 6) A consulting engineer is performing a diagnostic evaluation of a 0.7-MGD water treatment plant. The engineer is required to evaluate the existing chlorination system, which consists of two 150-lb cylinders. Using a chlorine dosage of 4.5 mg/L, the number of days of disinfection the system will provide without running out is nearly: 7.) A 12.5-MGD water treatment plant is to be designed with eight identical rectangular clarifiers with length-to-width ratio of 5:1. The clarifiers will be in parallel. If the clarifiers are 16 ft deep with a horizontal velocity of 0.5 ft/min, the dimensions (ft) of each clarifier need to be most nearly: 8.) A circular clarifier is being designed to receive a flow of 3.5 MGD. If the clarifier depth is 12 ft and the detention time is 2 hours, the tank diameter (ft) is most nearly 9.) With a design retention time of 1 min, dynamic viscosity of 2.735*10-5 lb-sec/ft2, and a velocity gradient value of 700 sec, the power (ft-lb/sec) that must be imparted to 2 MGD of water passing through a rapid mix unit is most nearly: 10) 20-ft x 40-ft dual media drinking water filter is to be cleaned using an air wash followed by & water wash. The air wash is at a rate of 5 sefm/ft². The recommended airflow rate (scfm) for the air wash is most nearly: 12.) A typical primary clarifier is needed to remove 64% of the suspended solids of the treated water. the flow rate is 1.5 cfs, what is the necessary surface area of the clarifier? 13.). A filtration system is used to treat water. The water has a terminal settling velocity of 10 m/s, and the porosity of the fluid bed is 0.1. At what velocity should the system be backwashed? 14.) A turbulent flow impeller is used in a rapid mix water treatment system. If the turbine has 6 curved Blades and operates at a rotational speed of 125 rpm, how much power is needed to run the turbine? The diameter of the impeller is 0.3 m, the water density is 1000 kg/m³, and the flow is turbulent.

You work as a process engineer in a manufacturing facility producing canopies for utility vehicles (utes) (such as shown in Fig 2). You receive stock materials such as (flat) metal sheets, windows (pre-moulded to shape), hinges, handles, moulded spoilers and paints. The sheet metal working, assembly and panting/finishing operations are performed on site. Present a manufacturing process chain (in a similar format as presented in Fig 1 with as much detail as applicable), maintaining the most logical and practical sequence of processes, for making a finished product - a canopy presented in Fig 2. from the described materials in your facility.

4) Eli Goldratt wrote, The Goal, which primarily addressed options related to time off or vacation scheduling.

a) Describe five different manufacturing methods, including their corresponding characteristics and applications. Give exemplified products made from each manufacturing method.(5 marks) b) What are the cutting parameters? Give their definitions. How do they affect different chip formation? Give examples for each kind of chip during the cutting process. c) For a turning operation, calculate the rotational speed if the workpiece diameter isD and the cutting speed is V. If the depth of cut used was di, the process is completed in n identical passes, what is the final diameter? Use the parameters specified in the following table for calculation. d) How is the normal surface roughness formed? What are the influencing factors and improvement measures?(5 marks)

2. A 7 kg package slides down an incline with an initial speed of 1 m/s. The coefficient of friction for surface ABC is ur = 0.314. Determine the initial kinetic energy T. [J] b. the distance d [m] so that the package hits the conveyor belt at a speed 2 m/s. c. the velocity at the bottom of the hill [m/s] d. the total energy lost due to friction [J]

20.25 (SI units) In a turning operation, cutting speed = 200 m/min, feed = 0.25 mm/rev, and depth of cut= 20 mm2/s, and volumetric specific heat = 3.54.00 mm. Thermal diffusivity of the work material(10-3) J/mm3-C. If the temperature increase above ambient temperature (20°C) is measured by a tool-chip thermo couple to be 700°C, determine the specific energy for the work material in this operation.

(USCS units) A CNC drill press performs a series of through-hole drilling operations on a 1.75-inthick aluminum plate that is a component in a heat exchanger. Each hole diameter = 3/4 in. There are 100 holes in all, arranged in a 10 by 10 matrix pattern, and the distance between adjacent hole centers (along the square) = 1.5 in. Cutting speed = 300 ft/min, penetration feed (z-direction) =0.015 in/rev, and traverse rate between holes (r-y plane) = 15.0 in/min. Assume that r-y moves are made at a distance of 0.50 in above the work surface, and that this distance must be included in the penetration feed rate for each hole. Also, the rate at which the drill is retracted from each hole is twice the penetration feed rate. The drill has a point angle = 100°. Determine the time required from the beginning of the first hole to the completion of the last hole, assuming the most efficient drilling sequence is used to accomplish the job.

18.15. (USCS units) A cylindrical work part with diameter 2.5 in, and height = 2,5 in is upset forged in an open die to a height -1.5 in. Coefficient of friction at the die-work interface = 0.10. The work metal has a strength coefficient - 40,000 lb/in' and strain hardening exponent - 0.15. Yield strength-15,750 lb/in',Determine the instantaneous force in the operation (a) just as the yield point is reached (yield at strain -0.002), (b) at height h- 2.3 in, (c) h= 2.1 in,

8. Identify the four forces that act on the chip in orthogonal cutting but cannot be measured directly in an operation. (2')