True/False
Indicate whether the
statement is true or false.
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1.
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Always wash your hands after soldering.
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2.
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There is no need to wear safety glasses when soldering.
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3.
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It’s okay if leads short across other traces or leads.
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4.
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You should use heat sinks for heat-sensitive parts.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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5.
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What is the typical wattage of a soldering iron used in electronic
application?
a. | 25-30 watts | c. | 30-35 watts | b. | 10-15 watts | d. | 20-25 watts |
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6.
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Solder is an alloy of what two metals?
a. | lead and copper | c. | silver and gold | b. | aluminum and copper | d. | tin and lead |
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7.
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What is the purpose of tinning?
a. | Tinning is to make the tip look clean. | c. | Tinning allows the transfer of heat
to the workpiece. | b. | Tinning is a method of
desoldering. | d. | Tinning is to
test the solder iron to make sure that it is hot enough. |
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8.
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60/40 solder melts at __________.
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9.
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Which of the following is NOT a bad solder joint?
a. | Insufficient Wetting | c. | Solder bridge | b. | Smooth, clean, concave
fillet | d. | Cold solder
joint |
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10.
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Why is solder used in electronic application frequenty called 60/40
solder?
a. | Because it is 60% Lead and 40% Tin | c. | Because it is 63% Tin and 37%
Lead | b. | Because it is 63% Lead and 37% Tin | d. | Because it is 40% Lead and
60%Tin |
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Multiple Response
Identify one
or more choices that best complete the statement or answer the question.
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11.
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What are the two techniques that can be used to de-solder a component from a
PCB? Answer all that apply.
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