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QUESTION 1 What is the gear ratio of this worm and wheel? (A) 1:6 (B) 6:3 (C) 18:1 (D) 18:3
QUESTION 2 8) A 25 kg block is pulled up an incline using a force P as shown. What is the minimum value of P required to just move the box from rest if the coefficient of static friction is 0.4? (A) 192.3N (B) 103.5N (Cc) 414N (D) 14.7N
QUESTION 3 What is the hypo-eutectoid formation indicated by the arrow in this carbon steel microstructure? (A) ferrite (B) pearlite (C) austenite (D) cementite
QUESTION 4 High-voltage transmission cable insulation would most likely be manufactured from (A) polyvinyl chloride. (B) polypropylene. (C) polyethylene. (D) polystyrene.
QUESTION 7 A 20 kg box sits just on the point of sliding on an incline plane. If the coefficient of static friction is 0.27 what is the angle of repose? (A) 5� (B) 13� (Cc) 15� (D) 16�
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