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APCK, SSC/PSC/RAIL/MES/DRDO/ISRO/OFB, MECHANICAL ENGINEERING (RIVET). F.M.-30. TIME-15 MIN., , 1. A rivet consists of a cylindrical part called, @) head. b) shank. c) cylinder d) snap, , 2. Rivets are usually made of, a) cast iron b) wrought iron c) aluminum d) steel, , 3. Which of the following is not a type of rivet head?, a) Flat head b) Mushroom head c) High head d) Low head, , 4, Shank diameter of the rivet depends upon the, a) thickness of the plates to be joined b) height of the shank c) material of shank d) standards of, manufacturing, , 5. d=6ytis the equation for diameter (d) and thickness (t) when, a) d and t are in millimeters b) d and t are in inches c) d is taken from standard chart and t is calculated, @) tis taken from standard chart and d is calculated, , 6. Rivets of 3 to 10 mm shank diameter size are not used for., a) sheet metal b) light structural work c) heavy steel structure d) iron sheets, , 7. Size of large rivets varies from ___ shank diameter., @) 3 to 10 mm b) 5 to 20 mm c) 10 to 15 mm d) 12 to 48 mm, , 8. Thickness of the plates to be joined and the type of joint decides the of the rivet needed., a) type of head b) diameter c) length d) holes, , 9. The plates to be joined with rivet are drilled with holes of a size slightly less than the shank diameter of, the rivet., a) True b) False, , 10. If the volume of the extra length is lesser than the head, the joint may be, @) loose b) tight c) broken d) failed, , 11. Caulking tool is used for joint., a) loose b) tight c) leak-proof d) every rivet, , 12. According to arrangements of plates, which of the following is not a type of riveted joints?, a) single cover plate butt joint b) double cover plate butt joint c) lap joint d) zigzag joint, , 13. When Plate A and Plate B are joined by overlapping each other, the joint is, a) lap joint b) single cover plate butt joint c) double cover plate butt joint d) chain joint, , 14, What is the purpose to increase the number of rows of rivets?, a) To increase the strength b) To make it double riveted joint c) To make a suitable design d) Reduce, the number of rivets in one row, , 15. For double riveted butt joint, number of rows of rivet is, a) two b) three c) four d) one, , 16. For butt joints, number of cover plates can be, @) one only b) minimum two c) two only d) one or two

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17. If one cover plate is used, thickness of cover plate is kept times that of the main plate., a) 0.75 b) 1.25 c) 1.125 d) 1.5, , 18. Average thickness of double cover plate butt joint is 0.75 times that of main plate., a) True b) False, , 19. If the number of rivets in each adjacent row goes on decreasing in subsequent rows towards edge, it is, called riveting., @) diamond b) chain c) squar d) zigzag, , 20. If the rivets are used along a number of rows such that the rivets in the adjacent rows are placed, directly opposite to each other, it is known as, a) diamond b) chain c) square d) zigzag, , 21. In riveting, the rivets in the adjacent rows are staggered and are placed in between those of, the previous row., a) diamond b) chain c) square d) zigzag, , 22. Which of the following structural section is not considered for rivet joints?, @) Tee section b) Flat section c) | section d) Circular section, , 23. Explosive rivet is another type of rivet., a) blind rivet b) gusset plates c) zigzag riveting d) chain riveting, , 24, is a technique to form a rivet head without access to the other side of the joint., a) full-tubular riveting b) blind riveting c) split riveting d) flush joint, , 25. In explosive rivets, instead of mandrel is used., @) rod b) explosive c) breaking type of mandrel d) non-breaking type of mandrel, , 26. Which type of rivet is used for applications like air-craft?, a) Counter sunk rivet b) Blind rivet c) Explosive rivet d) Flat rivet, , 27. For light-work, the rivet size used varies from mm., a) 4108 b)2 to 4c) Oto3d)3to6, , 28. L/D ratio for light work applications is kept not more than, a) 5:2 b) 6:1 c) 4:1 d) 5:1, , 29. Ina the body is sawn to produce a prolonged shank., a) semi-tubular rivet b) tubular rivet c) split pin rivet d) compression rivet, , 30. For plastics, the margin (i.e. center of rivet to the edge) is between, a) 2d to 4d b) 1d to 3d c) 2d to 3d d) 1d to 2d