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Question 1

1.   Stainless steel is considered dangerous to weld because it contains: Answer

   		crystalline silica.
   		copper.
   		iron.
   		chromium.

2 points  

Question 2

1.   For accident prevention purposes, pressures above _____ psig must be regarded as hazardous. Answer

   		0
   		15
   		100
   		1000

2 points  

Question 3

1.   If there is fusion of the parent metal in a joining process the process is designated as: Answer

   		sintering.
   		brazing.
   		soldering.
   		welding.

2 points  

Question 4

1.   Which of the following is an inerting agent for welding processes? Answer

   		Cadmium
   		Argon
   		MAPP gas
   		Slag

2 points  

Question 5

1.   What standard was developed to ensure the safe design and construction of pressure vessels? Answer

   		National Board Inspection Code (NBIC)
   		ASME Boiler and Pressure Vessel Code
   		American Welding Society
   		ANSI Power Piping Code

2 points  

Question 6

1.   The current drawn by a 60-watt table lamp circuit is approximately: Answer

   		0.1 amp.
   		1/2 amp.
   		1 amp.
   		5 amp.

2 points  

Question 7

1.   Which of the following substances is emphasized as a hazard in the OSHA welding standard? Answer

   		Silica
   		Manganese
   		Magnesium
   		Zinc

2 points  

Question 8

1.   Name the two causal categories of pressure vessel accidents. Answer

   		Material strength and poor maintenance
   		Material compatibility and poor operating practices
   		Poor design and faulty assembly/installation
   		Engineering and user

2 points  

Question 9

1.   Assume heart fibrillation occurs at 75 mA. A common household circuit rated at 15 amps can carry approximately how many times as much current passing through the heart muscle as is required to produce heart fibrillation? Answer

   		Twice as much
   		Ten times as much
   		200 times as much
   		500 times as much

2 points  

Question 10

1.   Weatherproof electrical outlets as seen installed on decks and patios are Answer

   		not approved for hazardous locations.
   		approved for Class I, Division 1.
   		approved for Class I, Division 2.
   		approved for Class III, Division 2.

2 points  

Question 11

1.   Identify two oxides of nitrogen that are included in the NOx category. Explain the acute and chronic effects of each. Answer

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