Q&A Hero

Q: 88. A full revolution punch press operates at 60 rpm and has a safety distance of exactly 63 inches. From this data figure out the number of engagement points and justify your answer with calculations.

Q: 89. It can be said that for some presses the slower the speed of the ram, the safer the press, but for other presses, the faster the speed of the ram, the safer the press. Explain the logic behind this apparent contradiction, and describe the physical features that distinguish these two types of presses.

Q: 88. The diagram shows incorrect rigging and an OSHA violation. How can it be corrected?

Q: 89. What is the mechanical advantage of the reeving arrangement for the hoist shown in the diagram. Explain how you know.

Q: 90. How many "parts of rope" (chain) support the load block in the illustration below?

Q: 91. The calipers shown are being correctly used to gauge the diameter of the wire rope.a. Trueb. False

Q: 92. The wire rope shown has:a. how many "strands" ________b. how many "cores" __________

Q: 93. Explain why it is permissible to pick up a load with wire rope block and tackle when the load is even heavier than the breaking strength of the wire rope.

Q: 94. "Two-blocking" is a. a method of adding a margin of safety to lifting operations b. caused by raising a load too high c. classified as a "de minimus" hazard d. an erroneous term; the correct term is "tube-locking"

Q: 95. The most important problems with forklift trucks occur in the area ofa. improper selection of the type of truck for hazardous atmospheresb. illegal modifications from one type of truck to another classificationc. improper operations and maintenance of the trucksd. use of trucks that do not have Underwriters Laboratories approval

Q: 96. Headlights on forklift trucksa. are required by OSHA if ambient light is less than 2 lumens/ft2b. are required by OSHA if ambient light is less than 5 lumens/ft2c. are required by OSHA under all circumstancesd. are not mentioned in the OSHA standards.

Q: 97. A particular wire rope has a "nominal breaking strength" of 15000 pounds. How much mechanical advantage in the reeving arrangement is necessary to safely and legally (per OSHA standards) pick up a payload of 10000 pounds?

Q: 98. Through proper training, workers will learn that almost everyone is able to lift a heavier load with the legs than with the back.a. trueb. false

Q: 83. A block-and-tackle arrangement has two sheaves on the lower block and the end of the wire rope is also attached to the load block, which weighs 100 pounds. The nominal breaking strength of the rope is 10,000 lbs. Calculate how much payload this assembly can allowably pick up. Show your work.

Q: 99. If the shape of the load is such that it must be brought out in front of the knees, lifting with the legs decreases the compression force on the lower back.a. trueb. false

Q: 84. The diagram illustrates which of the following crane types? a. cantilever gantry crane b. wall crane c. gantry crane d. overhead traveling crane

Q: 100. The capacity to lift varies greatly with the horizontal position of the load, which is determined largely by the shape of the object being lifted.a. trueb. false

Q: 85. The diagram illustrates which of the following: a. one part of line b. mechanical advantage c. proper use of a becket d. an OSHA violation

Q: 101. Explain the hazard mechanism that makes the danger of screw conveyors so insidious.

Q: 86. Determine the mechanical advantage of the reeving arrangement shown and explain how you know.

Q: 102. Explain how an screw conveyor auger intake can be made safe.

Q: 87. The diagram shows incorrect rigging and an OSHA violation. How can it be corrected?

Q: 103. Explain how conveyor hazards can be deceptively dangerous.

Q: 72. When a hoist raises a load too high, which of the following is likely to occur? a. lay overlay b. lay separation c. tube-locking d. two-blocking

Q: 73. Two-blocking results in a. great protection of the wire rope b. an extra margin of safety for heavy loads c. a redundant back-up in case the main rope fails d. a severe stress on the wire rope e. none of the above

Q: 74. A block and tackle hoist has 3 sheaves on each of the blocks. To which of the blocks is the end line attached?

Q: 59. What is the mechanical advantage of the reeving arrangement shown?

Q: 75. Industrial trucks are classified by how many design classification by the type of power and degree of hazard for which approved?

Q: 60. What is the mechanical advantage of the reeving arrangement shown?

Q: 76. Explain why lifting load by its binding straps places a severe load on the straps?

Q: 61. What is the mechanical advantage of the reeving arrangement shown?

Q: 77. Explain why a longer sling enables a load to be lifted with less stress on the sling than would be the case for a shorter sling.

Q: 62. What is the mechanical advantage of the reeving arrangement shown?

Q: 78. Two-blocking results from a. insufficient clearance at the rear of the crane cab b. riding the headache ball c. hoisting the load too high d. none of the above

Q: 63. Which is the proper arrangement? (a) (b) (c)

Q: 79. An OSHA standard prohibits pouring water into acid; this rule is found in which of the following subjects addressed in the standards? a. welding b. industrial trucks c. cranes d. chemical process safety

Q: 64. What is the mechanical advantage of the arrangement shown?

Q: 80. Industrial trucks, designated EX, DY, G, LPS, etc., are classified by two criteria. What are these two criteria?

Q: 65. The dimension pictured is a. the strand length b. the core lay c. the lay length d. the becket length

Q: 81. A five thousand pound load is to be picked up by a wire rope hoist in which the wire rope has a nominal breaking strength of 4,000 pounds. The load block weighs 50 pounds. Show all calculations necessary to:a. Determine the minimum number of sheaves needed on the upper and lower blocks to meet standards.b. To which block will the end of the wire rope be attached for yoursolution to the problem?

Q: 66. Which is the correct method of gauging wire rope diameter? (a) (b)

Q: 82. A block-and-tackle assembly has 2 sheaves on the lower block and the end of the wire rope is attached to the upper block. The load to be picked up weighs 5 tons (10,000 lbs) and the load block weighs 100 lbs. Calculate the minimum allowable nominal breaking strength of the wire rope to meet OSHA standards. Show your work.

Q: 67. Explain the difference between a hoist chain and a sling chain.

Q: 68. Explain the admonition "Don"t saddle a dead horse", in the context of a material handling equipment.

Q: 69. Explain the proper sequence for mixing acid and water.

Q: 70. Explain the phenomenon of "two-blocking."

Q: 71. What is the name of the phenomenon that occurs when a hoist raises a load too high?

Q: 40. The standard for materials stacking in warehouse storage is of the:a. performance typeb. specification type

Q: 56. The crane pictured is a. a gantry crane b. a semi-gantry crane c. a cantilever gantry crane d. an overhead traveling crane

Q: 41. The standard for materials stacking in warehouse storage is a performance standard.a.trueb. false

Q: 57. The crane pictured is a. a gantry crane b. a semi-gantry crane c. a cantilever gantry crane d. an overhead traveling crane

Q: 42. Which of the following are excluded from the "powered industrial trucks" standard? a. farm tractors b. over-the-road vehicles c. vehicles for earth moving d. all of the above e. none of the above

Q: 58. The crane pictured is a. a gantry crane b. a semi-gantry crane c. a cantilever gantry crane d. an overhead traveling crane

Q: 43 Which of the following are excluded from the "powered industrial trucks" standard? a. motorized hand trucks b. industrial tractors c. vehicles for earth moving d. all of the above e. none of the above

Q: 44. Which of the following are NOTexcluded from the "powered industrial trucks" standard? a.motorized hand trucks b. farm tractors c. over-the-road vehicles d. all of the above e. none of the above

Q: 45. Which of the following are NOTexcluded from the "powered industrial trucks" standard? a. motorized hand trucks b. industrial tractors c. forklifts d. all of the above e. none of the above

Q: 46. Which of the following are excluded from the "powered industrial trucks" standard? a. motorized hand trucks b. industrial tractors c. forklifts d. all of the above e. none of the above

Q: 47. Which of the following forklift truck ratings is approved for Class I, Division 1, Group D? a. DS b. EE c. EX d. LPS

Q: 48. Which of the following forklift truck ratings is not approved for Class I, Division 2?a.DSb. EEc. DYd. EX

Q: 49. Which of the following forklift truck ratings is approved for the most hazardous locations? a. DS b. EE c. DY d. EX

Q: 50. Which of the following is not a valid rating for an industrial truck? a. DY b. DX c. EX d. LPS

Q: 51. Which of the following is not a valid rating for an industrial truck? a. D b. DX c. EX d. LPS

Q: 52. Which of the following is not a valid rating for an industrial truck? a. D b. DX c. E d. LPS

Q: 53. Which of the following is not a valid rating for an industrial truck? a. DY b. DX c. E d. LPS

Q: 54. A violent and exothermic reaction occurs when acid is poured into water.a. trueb. false

Q: 39. The hazards of remote control are particularly acute for which of the following types of equipment: a.materials handling equipment b. rail sweeps c. trolley bumpers d. wind indicators

Q: 55. A violent and exothermic reaction occurs when water is poured into a strong, concentrated acid.a.trueb. false

Q: 24. "Deadman controls" for handheld pendantstations

Q: 25. Load test standard (25% higher than rating) for overhead cranes

Q: 26. Overhead guards to protect forklift driver from objects falling from the load

Q: 27. Dailyinspection of forklift trucks

Q: 28. Inspection of a forklift truck used on the night shift

Q: 29. HAZARD: Wheels not chocked on a forklift truck parked on an incline

Q: 30. HAZARD: Engine left running on an unattended forklift truck

Q: 31. HAZARD: Operator goes home at night, forgetting to lower the forks on his forklift truck

Q: 32. HAZARD: Unauthorized person attempts to repair a forklift truck

Q: 16. HAZARD: Insecure stacking in the warehouse

Q: 33. HAZARD: No sweeps to protect bridge trucks from rolling off the crane rails

Q: 17. HAZARD: Taking passengers for rides on forklift trucks

Q: 34. HAZARD: Forklift drops full load on unsuspecting passerby below