SECTION D 1. Explain with the aid of sketches the difference between single-point cutting and multiple-point cutting actions. 2. Name any four multiple-point cutting machines. [6] [4] 3. State any two safety rules concerning the user that must be observed when using a milling machine. [2] 4. State why the average speed for turning aluminum is higher than that for brass and mild steel. 5. Calculate the spindle speed in revolutions per minute of 46 mm diameter mild steel rod. [4] [3] Given that: Spindle Speed in r.p.m= cutting speed in m/mx100 PiexDiameter of work in mm 6. What cutting fluids must be used when turning aluminum and steel? [2] 7. With the aid of sketches differentiate between straight knurling and diamond knurling. [4] Total: 25 Marks Page 3 of 3 Turn Over

Compare between slip casting and tape casting?

List the types of Hammer and explain their typical efficiency.

Describe in detail a problem that arises when using a right-angle side grinder to grind aluminum or brass.

Please identify the parts of this milling machine. ASAP!

*. A simply-supported beam has fe=3,000 psi and is reinforced with Grade 60 steel (3 #9 bars). If wL=1.5 Kip/t, and wp=1 kip/ft (including self-weight), determine the maximum instantaneous live load deflection. 12" 20' 0"- 17" 20" E. = 57000 F 5ML² 3- #9 5wL2 %3D 48EI 384EI

A compound die will be used to blank and punch a large washer out of 6061ST aluminum alloy sheet stock 3.50 mm thick. The outside diameter of the washer is 50.0 mm and the inside diameter is 15.0 mm. Determine the punch and die sizes for the blanking operation. TABLE 20.1 Clearance allowance value for three sheet-metal groups. Metal Group A. 0.045 1100S and 5052S aluminum alloys, all tempers 2024ST and 6061ST aluminum aloys; brass, all tempers; soft cold- rolled steel, soft stainless steel Cold-rolled steel, half hard; stainless steel, half-hard and full-hard 0.060 0.075 Select one: a. 39.58 mm b. 69.58 mm c. 59.58 mm d. 49.58 mm

5. /6 Using the figure below, answer the following: a. What is the type of weld to be made? b. What is the size of the weld? c. How many welds are to be made? (10) 106

Situation 20: The figure shows a precast plain concrete beam simply supported on a b -- b a File Home Insert D 유 Share X Cut span of 3m. P Find - e Copy Given: Sac Replace Paste * Format Painter B Concrete unit weight =23.5kN/m³ d. A Select - Clipboard a=200mm d=200mm Editing b=150mm e=150mm c=500mm f=150mm e 67. Determine the weight of beam per meter a. 2.85 kN/m b. 2.94 kN/m c. 3.94 kN/m d. 4.14 kN/m ww C 68. What is the allowable load on the beam if the cracking moment is 27 kN-m a. 21.15 kN/m b. 21.06 kN/m c. 19.86 kN/m d. 20.06 kN/m Situation 21: A square tied column carries a factored load of 2800KN. It will be designed using material strengths fc'=27MP and fy=345MPA. Assume p=0.02 69. Determine the minimum required dimension of the column. b. 450 mm a. 400 mm c. 500 mm d. 550 mm 70. Determine the number of o25mm vertical bars required. a. 8 bars b. 9 bars c. 10 bars d. 11 bars Page 7 of 10 22 of 4146 words English (United States) & Accessibility: Investigate 160% ENG 10:26 am…

Problem 2 Consider the casting of the 2mm thick object below shown in its top view. If one riser with D =H = 6.5 mm is needed for this casting, illustrate where the riser should be located to produce a sound casting. Is this possible with no chills? Hint: use your illustration to justify. If no risers were used, illustrate where the shrinkage defects would likely occur. Tip: Using Word's/Powerpoint's basic shapes will be helpful here. 12.5 mm 10 mm 6.2 mm