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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?In designing a plastics product, it is important to keep the function of the final product in mind, since plastics are so sensitive to ____.
A. ?stress B. ?cold C. ?heat D. ?acidity
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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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Find v?(t) in the circuit in Fig. 16.58.
 figure 1.png)
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Which type of thermometer cannot be used to take air temperature readings?
A) Dial B) Digital C) Infrared D) Glass-stem
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