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Exam 16: Welding

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Question 31

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Explain why precautions should be taken when welding equipment connected to oxygen and acetylene tanks is stored in the confined space of an equipment locker.

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Oxygen and acetylene gases can slowly bu...

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Question 32

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The energy of the welding arc can cause decomposition of chlorinated hydrocarbon solvents to produce what dangerous gas?

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Question 33

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Acetylene is generated from which combination of ingredients?

The principal hazard of fluorine compounds is chronic,not acute,exposure.

NOTE TO INSTRUCTOR: In constructing variations to the questions in this chapter, care should be taken in the selection of multiple choice responses. The responses used in the questions herein were carefully selected to avoid controversy. For instance in question 1 SMAW or FCAW were not used as responses because these processes are also widely used in plate girder manufacturing although the SAW process is the best selection for typifying this type of application. The text mentions only SAW for plate girder manufacturing and the other three choices offered in the quiz question 1 (RSW, RSEW, and TW) are clearly incorrect responses to this question. This caution is offered to avoid challenges by students who may be experienced welders and may question the correct answer to a multiple choice question if the responses are not carefully selected to avoid such controversy. The same caution is urged for other sample questions offered for this chapter. -Which of the following types of welding is associated with inert gas shielding?

A principal advantage of spot welding operations is that they

Which of the following agents in the welding environment is considered the least dangerous?

Which of the following welding operations requires pressure in addition to heat?

A principal disadvantage of resistance welding operations is that they

Nitrogen is so stable that it is not subject to oxidation.

Stainless steel is one of the most dangerous materials to weld because of its high cadmium content.

NOTE TO INSTRUCTOR: In constructing variations to the questions in this chapter, care should be taken in the selection of multiple choice responses. The responses used in the questions herein were carefully selected to avoid controversy. For instance in question 1 SMAW or FCAW were not used as responses because these processes are also widely used in plate girder manufacturing although the SAW process is the best selection for typifying this type of application. The text mentions only SAW for plate girder manufacturing and the other three choices offered in the quiz question 1 (RSW, RSEW, and TW) are clearly incorrect responses to this question. This caution is offered to avoid challenges by students who may be experienced welders and may question the correct answer to a multiple choice question if the responses are not carefully selected to avoid such controversy. The same caution is urged for other sample questions offered for this chapter. -Which of the following types of welding uses flexible consumable electrodes on spools?

Seam welding requires electric current and

In the intense heat of welding,even nitrogen can be oxidized.

Explain the tradeoff or drawback that prevents selection of a higher protective shade for the protection of welders' eyes.

Acetylene is generated from which combination of ingredients?

Which of the following types of welding requires the darkest shade numbers for eye protection?

Spot welding requires electric current and

Which of the following types of welding is usually done with goggles instead of helmets with shades?

Select the most dangerous of the following potential exposures in the welding environment.