Magnus is installing a resistor in series with the bimetallic switch. why is he doing this ? a. t...
magnus is installing a resistor in series with the bimetallic switch. why is he doing this ? a. to make the thermostat "snap," or operate more quickly b. to anticipate heat changes c. to avoid arcing d. to change the operative thermostat temperature
Homework Answers
The resistance of a resistor changes with temperature as per the following relation:
Rt = R0 (1 + at)
where R0 is the resistance of the resistor at 00 C, a is the temperature coefficient of resistance (in ohms / 0C ) and t is the temperature in 0C.
Thus by measuring the resistance in series with the bimetallic strip, the temperature change can be observed.
The correct option is (b) [ to anticipate heat changes ]
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