For ambient temperatures greater than 70°C, the power rating of a resistor must be
A) increased
B) derated
C) doubled
D) held constant
Correct Answer:
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Q21: A device that is used to provide
Q22: Rheostats and potentiometers are referred to as
A)
Q23: What resistive device is generally used to
Q24: Commercial rheostats are typically
A) wire-wound, high wattage
Q25: The power rating is a property of
Q27: When not used, resistors generally keep their
Q28: The most common trouble in resistors is
A)
Q29: What is indicated when a volume or
Q30: As measured with an ohmmeter, infinite ohms
Q31: What may cause a much lower resistance
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