Elements 7

1. The total permissible variation in the size of a dimension; the difference between the limits of size.
A. allowance
B. tolerance
C. variance
D. interface

2. Considering that there is no fit, what is the permissible liberal tolerance in machining work?
A. ± 0.010
B. ± 0.090
C. ± 0.020
D. ± 0.050

3. A tolerance where the size of a part is permitted to be either larger or smaller than the given dimension.
A. Unilateral
B. Lateral
C. Bilateral
D. None of these

4. Basic size is the same as design size if there is No ____.
A. Allowance
B. Clearance
C.. Limits
D. Tolerance

5. Which of the following is a tolerance where the size of a part may be larger only, or smaller only, than the given dimension.
A. Unilateral
B. Lateral
C. Bilateral
D. None of these

6. In the selection of wire rope, regular lay means wires and strands are arranged in the following manner —-.
A. Twisted in the same direction
B. Twisted in any direction
C. Twisted in opposite direction
D. Twisted in along direction

7. Negative allowance is also called
A. Interference of metal
B. Feeler gage
C. Micrometer
D. Tolerance

8. Plus or minus of the tolerance is also called —
A. Total tolerance
B. Unilateral tolerance
C. Bilateral tolerance
D. None of these

9. Which of the following is the basis for ASA fits?
A. Basic number system
B. Basic hole system
C. Basic size system
D. Unit system

10. What is the direction of the predominant surface pattern?
A. Smoothness
B. Waviness
C. Lay
D. Roughness

11. It is the irregularities of departures from the nominal surface of greater spacing than roughness?
A. Waviness
B. Roughness
C. Lay
D. Smoothness

12. A fit generally used on those dimensions involved in a fit such as pin in a hole.
A. Unilateral
B. Lateral
C. Bilateral
D. None of these

13. It is relatively finely spaced irregularities of the surfaces.
A. Smoothness
B. Waviness
C. Lay
D. Roughness

14. It is the surface finish of heavy cuts or coarse feed.
A. 200 rms
B. 400 rms
C. 80 rms
D. 500 or greater rms

15. One of the following is not a common term relating to the classification of fits.
A. Tunking
B. Snug
C. Medium force fit
D. Bound

16. Any device used to raise or lower an object.
A. Hoist
B. Spring
C. Lever
D. Roller

17. Which of the following ropes are more flexible?
A. 6 to 19
B. 6 to 7
C. 8 by 19
D. 6 by 37

18. If shaft size is specified as diameter 2.00" max. and 1.99" min. in diameter then the 0.010" could be defined as —
A. Allowance
B. Variance
C. Fit
D. Tolerance

19. The factor of safety generally applied in wire rope design starts at 3-4 for standing rope application, 5-12 for operating rope, and —- for hazard to life and property application like foundry operation.
A. Higher value
B.. 7-10
C. 8-10
D. 10-18

20. One of the following materials is not mentioned for wire rope pulley/sheave applications.
A. Plastic
B. Iron
C. Paper
D. Copper alloy

21. A wire rope that the wires and strands are twisted in the opposite direction.
A. Long lay
B. Perform
C. Regular lay
D. Lang lay

22. Is the permissible variation of the size of a dimension.
A. Tolerance
B. Allowance
C. Clearance
D. Interference

23. A wire rope that the wires and strands are twisted in the same direction.
A. Long lay
B. Perform
C. Regular lay
D. Lang lay

24. Which of the following ropes is used for haulage, rigging, guard rails?
A. 6 X 35 IWRC
B. 6 X 15 IWRC
C. 7 X 8 IWRC
D. 7 X 7 IWRC

25. Which of the following has been considered as a general-purpose rope?
A. 6 x 19 IWRC
B. 7 × 25 IWRC
C. 7 x 25 IWRC
D. 6 x 9 IWRC

26. Which of the following ropes is used for lines, hawsers, overhead cranes, and hoists.
A. 6 × 37 IWRC
B. 6 x 35 IWRC
C. 6 x 25 IWRC
D. 7 x 26 IWRC

27. The regular materials for wire ropes are made of
A. Chromium
B. Wrought iron
C. Cast steel
D. High-carbon iron

28. What is the minimum suggested design factor of wire ropes for miscellaneous hoisting equipment?
A. 2
B. 3
C. 5
D. 4

29. The amount of variation permitted in the size of a part. It is the difference between the limits of the maximum and minimum dimensions of a given part. It may be expressed at plus, minus, or as both plus and minus.
A. Tolerance
B. Limits
C. Variation
D. Clearance

30. To avoid excessive wear rate, the recommended limiting pressure for 6 x 19 rope is —- for cast steel.
A. 700 psi
B. 900 psi
C. 1000 psi
D. 1200 psi

31. To avoid excessive wear rate, the recommended limiting pressure for 6 x 19 rope is —- for manganese cast steel.
A. 2500 psi
B. 2000 psi
C. 3000 psi
D. 2300 psi

32. Which of the following ropes is galvanized and consists of 6 strands, 7 wires each, and a hemp core?
A. Reverse Lay Rope
B. Guy Rope
C. Lang Lay Rope
D. Regular Rope

33. Factor of safety for standing rope usually ranges from
A. 3 to 4
B. 5 to 6
C. 1.5 to 3.5
D. 2.5 to 6.5

34. Factor of safety for operating rope usually ranges from
A. 3 to 4
B. 5 to 6
C. 1.5 to 3.5
D. 2.5 to 6.5

35. IWRC for wire ropes means what?
A. Independent wire rope core
B. International wire rope code
C. Independent wire rope cuts
D. International wire rope class

36. Which of the following is used occasionally for elevator governor-cable rope and for main marine applications as lifelines, clearing lines, wheel ropes, and rigging?
A. Phosphor bronze wire rope
B. Traction steel wire rope
C. Marine Clad wire rope
D. Manila Wire rope

37. Which of the following is sometimes called Bethanized wire rope?
A. Phosphor bronze wire rope
B. Traction steel wire rope
C. Marine clad wire rope
D. Zinc-coated wire rope

38. Which of the following is used primarily as hoist rope for passenger and freight elevators of the traction drive type?
A. Phosphor bronze wire rope
B. Traction steel wire rope
C. Marine clad wire rope
D. Wire strand Core wire rope

39. Which of the following is the most popular and widely used class of wire ropes?
A. 6 x 19
B. 6x7
C. 6x21
D. 6 x 17

40. Difference between maximum material limits of mating parts. Or it is a minimum clearance or maximum interference between parts.
A. Tolerance
B. Variance
C. Fits
D. Allowance

41. This is either the upper or the lower deviation, depending on which is closer to the basic size.
A. Fundamental deviation
B. Standard deviation
C. Allowance
D. Tolerance

42. When the hole is smaller than the shaft, it will take force or pressure to put the cold parts together. In such case the allowance is negative. Which of the following terms is appropriate for such allowance?
A. Negative fits of metals
B. Interference of metal
C. Positive fits of the shaft
D. Intangible fits

43. Pulley made of ——ordinarily is 45 to 55% less in weight and 2.35 to 2.70% less slippage compared with a pulley.
A. Iron/steel
B. Steel/iron
C. Wood/iron
D. Wood/steel

44. For most wire ropes and chains with 180° contact, the loss factor at low speeds varies between
A. 1.03 to 1.06
B. 1.20 to 1.50
C. 1.07 to 1.10
D. 1.60 to 1.80

45. If the ends are joined by wire lacing with a machine, the usual efficiency of joint is
A. 100%
B. 75%
C. 85%
D. 88%

46. Wire ropes are made from cold-drawn with —- or more teeth.
A. 21
B. 23
C. 25
D. 27

47. What is the minimum suggested design factor of wire ropes for miscellaneous hoisting equipment is
A. 2
B. 3
C. 5
D. 4

48. Permissible variation of the manufactured/machined dimension is called
A. Intolerance fits
B. Allowance
C. Deviation
D. Tolerance

49. The term applied to tolerance that is equal to plus and minus three standard deviations from the mean.
A. Natural tolerance
B. Bilateral tolerance
C. Unilateral tolerance
D. All of these

50. The general term that refers to the mating of cylindrical parts such as a bolt and a hole. It is used only when the internal diameter is smaller than the external.
A. Clearance
B. Interference
C. Variation
D. Allowance

51. It is the opposite of clearance. This is used for mating cylindrical parts in which the internal member is larger than the external member.
A. Interference
B. Allowance
C. Tolerance
D. Variation

52. The algebraic difference between a size and the corresponding basic size.
A. Tolerance
B. Allowance
C. Clearance
D. Deviation

53. The algebraic difference between the maximum limit of size and the corresponding basic size.
A. Upper deviation
B. Lower deviation
C. Fundamental deviation
D. Tolerance

54. The minimum stated clearance or maximum stated interference for the mating parts.
A. Variation
B. Limit
C. Allowance
D. Limits

55. What dimensional property of a material refers to a wavelike variation from a perfect surface, generally much wider in spacing and higher in amplitude than surface roughness?
A. Lay
B. Waviness
C. Surface finish
D. Out of flat

56. Which of the following that wire ropes are mostly applied?
A. High speeds and low tension
B. High speeds and high tension
C. Low speeds and low tension
D. Low speeds and high tension

57. The specification of wire ropes includes two numbers, such as 6 x 7. The first number indicates —-
A. The number of strands in the wire rope
B. The number of wires inside the rope
C. The number of twisted steel wires
D. The number of cores inside the wire rope

58. The failure of wire rope is mainly due to
A. Fatigue or wear while passing around the sheave
B. Load gradually applied to the rope
C. Intermittent loading on the rope
D. Tensile stress due to the applied load

59. The wires on the rope are subjected to which stress?
A. Shear stress
B. Tensile stress
C. Tensile and bending stress
D. Bearing stress

60. Which of the following is also known as standard hoisting rope?
A. 6 x 19
B. 6 x 17
C. 6 x 37
D. 6 x 7

61. Which of the following is also known as standard coarse-laid rope?
A. 6 x 19
B. 6 x 17
C. 6 x 37
D. 6 x 7

62. Which of the following is classified as extra flexible hoisting rope?
A. 6 x 37
B. 6 x 19
C. 6 x 7
D. 6 x 35

63. For forced fits, the allowance per inch of diameter usually ranges from—-
A. 0.001 in. to 0.0025 in.
B. 0.0015 in. to 0.0035 in.
C. 0.001 in. to 0.0045 in.
D. 0.0005 in. to 0.00045 in.

64. This is the basic size with allowance applied from which the limit of the size is derived by the application of tolerances.
A. Design Size
B. Actual Size
C. Limit of Size
D. Material Limit

65. How do you call the fit that is one having limits of size so specified that either clearance or interference may result when mating parts are assembled?
A. Transition fit
B. Interference fit
C. Actual fit
D. Clearance fit

66. How do you call the fit such that it has limits of size so specified that an interference always results when mating parts are assembled?
A. Transition fit
B. Interference fit
C. Actual fit
D. Clearance fit

67. The —-between two mating parts is the relation existing between them with respect to the amount of clearance or interference that is present when they are assembled.
A. Transition fit
B. Interference fit
C. Actual fit
D. Clearance fit

68. The distance between adjacent rivets is called
A. Pitch
B. Crest
C. Lead
D. Clearance

69. What do you call the distance between rivet center nearest each other in adjacent rows?
A. Pitch
B. Margin
C. Back pitch
D. Diagonal pitch

70. When the hole is smaller than the shaft, it will take force or pressure to put the cold parts together. In such a case, the allowance is negative. Which of the following terms is appropriate for such allowance?
A. Negative fits of metals
B. Interference of metal
C. Positive fits of the shaft
D. Intangible fits

71. A tolerance where the size of a part is permitted to be either larger or smaller than the given dimension.
A. Bilateral
B. Unilateral
C. Lateral
D. None of these

72. When the hole is smaller than the shaft, it will take pressure to put the parts together. The allowance is said to be negative and is termed —-
A. Negative tolerance
B. Negative allowance
C. Negative fits
D. Interference of metal

73. Allowance added in the casting pattern to compensate for the contraction of metal
A. Tapering allowance
B. Finish allowance
C. Shrinkage allowance
D. Draft pattern

74. Rivet holes are usually made —- larger in diameter than the nominal diameter.
A. 1/32 inch
B. 1/12 inch
C. 1/16 inch
D. 1/8 inch

75. A fit generally used on those dimensions involved in a fit; such as pin in a hole.
A. Unilateral
B. Lateral
C. Bilateral
D. None of these

76. All terms and abbreviations deal with wire rope arrangement except this —- which deals with wire rope materials strength.
A. Preformed
B. IWRC
C. Mps
D. Lang lay

77. The regular materials for wire ropes are made of —
A. Chromium
B. Wrought iron
C. Cast steel
D. High-carbon iron

78. How do you call the distance from the edge of the plate to the centerline of the nearest row of rivets?
A. Allowance
B. Margin
C. Clearance
D. Pitch

79. A kind of riveted joint where plates overlap each other and are held together by one or more rows of rivets.
A. Ordinary lap-joint
B. Butt-joint
C. Double riveting
D. Actual transverse riveting

80. Which of the following is (are) the factors) considered in the design or specifications of a riveted joint?
A. Spacing of rivets
B. Rivet material
C. Type of rivet
D. All of these

81. The rivet diameter commonly falls between —- where t is the thickness of the plate
A. 1.2 t to 1.4 t
B. 1.05 (sq rt of t) to 1.12 (sq rt of t)
C. 1.2 (sq rt of t) to 1.4 (sq rt of t)
D. 1.25 t to 1.65t

82. What is the algebraic difference between the minimum limit and the corresponding basic size?
A. Fundamental deviation
B. Upper deviation
C. Lower deviation
D. Clearance

83. Which of the following rivet material(s) is/are used in aircraft and other applications where lightweight or resistance to corrosion is important?
A. Monel
B. Inconel
C. Aluminum alloy
D. All of these

84. In the simple design of riveted joints, which of the following is (are) frequently assumed?
A. The load is carried equally by rivets.
B. No combined stresses act on a rivet to cause failure.
C. The tensile stress is uniform in the section of metal between rivets.
D. All of these

85. This refers to the relative looseness or tightness of mating parts, especially as it affects the motion of the parts or force between them after assembly.
A. Fit
B. Tolerance
C. Allowance
D. Clearance

86. Which of the following is the type of fit?
A. Clearance fit
B. Interference fit
C. Transition fit
D. All of these

87. What is the designation for standard clearance fits from ANSI (American National Standard Institute) for members that must move together?
A. RC (Running or Sliding Fits)
B. LC (Locational Clearance Fits)
C. FN (Force Fits)
D. LT (Locational Transition Fits)

88. The designation for standard clearance fits from ANSI (American National Standard Institute) for closed sliding fit is —-
A. RC 1
B. RC 2
C. RC 3
D. RC 4

89. The designation standard clearance fit from ANSI (American National Standard Institute) for precision running fit is
A. RC 1
B. RC 2
C. RC 3
D. RC 4

90. The designation standard clearance fit from ANSI (American National Standard Institute) for free running fit is
A. RC 3
B. RC 4
C. RC 7
D. RC 9

91. This is the type of fit where one member is heated to expand while the other member remains cool.
A. Shrink fit
B. Locational interference fit
C. Heavy drive fit
D. Clearance fit

92. Based on ANSI Standard, precision running fit is also known as
A. RC 3
B. RC 4
C. RC 5
D. RC 6

93. Based on ANSI Standards, which of the following classes of force fits is used for fragile parts where no large forces transmitted across the joint?
A. FN 1
B. FN 2
C. FN 3
D. FN 4

94. Based on ANSI Standards, which of the following classes of force fits is also known as general purpose or medium drive fit?
A. FN 1
B. FN 2
C. FN 3
D. FN 4

95. On the basis of determining the number of elevators required in a building, what is the average density of occupancy per person in terms of building floor area?
A. 9.3 m2 / person
B. 5.2 m2 / person
C. 2.5 m2 / person
D. 3.9 m2 / person

96. For determining the number of elevators, there shall be one elevator per —- persons occupying the building other than the first floor
A. 120
B. 200
C. 220
D. 100

97. Which of the following ropes is more resistant to abrasive wear and fatigue failure?
A. Lang-lay ropes
B. Regular-lay ropes
C. IWRC ropes
D. Mixed twisted ropes

98. What is the minimum number of ropes for traction elevators?
A. 1
B. 2
C. 3
D. 4

99. What is the minimum number of ropes for drum-type elevators?
A. 1
B. 2
C. 3
D. 4

100. Which of the following is the factor of safety to be used for elevator wire ropes having a speed of 50 ft/min?
A. 7.60
B. 12.40
C. 3.25
D. 4.20