Surface cracks can be located by using either a liquid penetrant or a _____ inspection process.?
?
 

A. grinding?
B. slag removal?
C. magnetic particle?
D. preheating?


Answer: C

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The difference between an SCR and a diode is that an SCR _____.

a. has three terminals b. is bidirectional c. has a drain connected to the negative terminal d. is normally open

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Which type of thermometer cannot be used to take air temperature readings?

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