51.
If a metallic conductor has a positive temperature coefficient of resistance, then:
A. as temperature increases, resistance decreases
B. as current increases, resistance decreases
C. as voltage increases, current increases
D. as temperature increases, resistance increases
Answer: Option D
Explanation:
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52.
What value of a 1.3 komega.gif resistor as measured by a digital voltmeter would be considered within tolerance?
A. 1234 omega.gif
B. 1235 omega.gif
C. 1366 omega.gif
D. 1367 omega.gif
Answer: Option B
Explanation:
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53.
If a calculator display was “0.00263,” what would this answer be in percent?
A. 0.026%
B. 0.26%
C. 2.63%
D. 26.3%
Answer: Option B
Explanation:
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54.
A 33 komega.gif resistor with a 20% tolerance checks out as ok with which of the following ohmmeter readings?
A. 26400 ohms
B. 24183 ohms
C. 6600 ohms
D. 39970 ohms
Answer: Option A
Explanation:
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55.
For P = V2/R, a decrease in resistance should produce:
A. a decrease in power
B. an increase in ohms
C. an increase in power
D. a decrease in current
Answer: Option C
Explanation:
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