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120 Multiple choice questions

  1. A restraining clamp in permissible condition.
  2. A step flange joint.
  3. 6 mph.
  4. .003 inch.
  5. Be made of a non-sparking material.
  6. 0.005 inch.
  7. 2.5 MPH.
  8. Closed with specially designed fittings or plugs.
  9. There's space for packing material to be placed around the cable.
  10. Mine operator.
  11. .004 inch.
  12. Inby the last open crosscut and in return air.
  13. 1,000 feet.
  14. 25 amps
  15. Must be permissible.
  16. It must be more than 25 feet from the machine (except cable reel).
  17. .005 inch.
  18. A 3/16-inch diameter if round and 3/16 x 3/16-inch if square.
  19. 10%.
  20. 1/2 inch.
  21. 5% to 15%.
  22. Arcing or sparking could result which, in turn, could set off an explosion or cause a fire.
  23. A cable reel.
  24. To allow harmful gases that cause corrosion to escape.
  25. Must be lined with a flame-resistant insulating material preferably bonded to the inside of the cover.
  26. 7/16 inch.
  27. Drainage holes.
  28. 150 Centigrade or 302 Fahrenheit.
  29. 6 inches.
  30. 1/2 inch.
  31. 2.5 mph
  32. An approved packing material.
  33. Screw type joint.
  34. Is no longer considered permissible
  35. It must be vulcanized.
  36. Do spark but will not ignite a methane-air mixture
  37. 550 feet
  38. Specifications set forth by the Secretary.
  39. At least 1/2 inch.
  40. 3/16 inch.
  41. Relieve pressure, ventilate, or drain.
  42. Portable trailing cables.
  43. Every three feet.
  44. 0.004 inch.
  45. Flame-resistant.
  46. Have at least 3 power wires and one ground wire.
  47. 3/8 inch.
  48. Explosion proof.
  49. Provide for mechanical protection.
  50. An improper assembly.
  51. 1/2 inch.
  52. Must be permissible.
  53. 150 degrees Centigrade.
  54. Threaded in snug and locked in place.
  55. The cover must be replaced.
  56. Drill a hole through and use a nut and bolt.
  57. Which moves faster than 2.5 mph must be equipped with cable reels.
  58. Drill hole through and use bolt nut.
  59. Always use terminals or clamps.
  60. .007 inch.
  61. .007 inch.
  62. It must be mechanically strong with adequate conductivity.
  63. It must be mechanically strong and well-insulated.
  64. Flame-resistant.
  65. Short-circuit protection in an explosion-proof enclosure.
  66. Step flange joints.
  67. .004 inch.
  68. Lock washer to help hold it in position.
  69. Plane Flange Joint.
  70. 150 psi.
  71. Equipment which has been tested and approved.
  72. Closing with hand pressure and opening if pressure is released.
  73. Must be placed in explosion-proof enclosures before they are considered "permissible."
  74. 2 feet.
  75. 6 MPH.
  76. Must be explosion-proof
  77. Equal to or greater than the diameter of the bolt.
  78. Is similar in all respects to that which has been approved by the USBM.
  79. No.6 AWG.
  80. 300 volts DC or AC.
  81. .004 inch.
  82. 40 volts.
  83. Should be mechanically tight and sealed or padlocked.
  84. 1/2 inch.
  85. 1/2-inch thick tempered glass.
  86. The mechanical protection of a cable.
  87. 500 feet.
  88. Must be properly enclosed to be considered permissible.
  89. 0.004 inch.
  90. 2.5 MPH
  91. Insulated bushings.
  92. Must be flame-resistant.
  93. 7/16 of an inch of metal from the interior of the enclosure to the closest edge of the hole must be maintained.
  94. 0.006 inch.
  95. So maintenance personnel can more readily check for damaged or worn parts.
  96. When two pieces of metal come together.
  97. 150 PSI.
  98. It will burn when held in a flame but will cease when the flame is removed.
  99. 0.007 inch.
  100. 1/8 inch.
  101. No.4 AWG
  102. ICEA standards
  103. 6 mph.
  104. Flame-resistant USBM - Not exceeding 3 feet.
  105. The threads are damaged.
  106. All glands
  107. Lock washers.
  108. Tightening the packing gland nut.
  109. One.
  110. Lock washer.
  111. Must be adequately ventilated.
  112. Plane flange joints.
  113. Transfer most of the strain from the trailing cable to the frame of the equipment it feeds.
  114. 1/8 inch.
  115. They must be less than 6 feet in length.
  116. Cables and hose will burn when held in a flame, but will cease burning when removed from flame.
  117. 1/8 inch.
  118. Step flange joints.
  119. Cannot have a nameplate voltage rating of more than 300 volts.
  120. 3/16 inch.