
Concept explainers
To Explain: The way in which the thermostat controls the furnace and it can be set at the different temperatures.

Answer to Problem 8Q
Due to the expansion and contraction of the bimetallic strips, this thermostat controls the furnace. The tilt of the mercury switch is changed due to adjusting the temperature setting lever. To tilt the mercury switch to the on or off position, a change of the different amounts of temperature is required.
Explanation of Solution
Introduction:
The thermostat is the device used for preventing overheating and for controlling the temperature of the circulating water. Thermostats are used in various fields.
Due to the expansion and contraction of the bimetallic strips, this thermostat controls the furnace. The strip coils more as the temperature increases or the strip coils less as the temperature decreases. The liquid mercury switch as the strip changes shape. According to the given diagram, the mercury will move as the switch was tilted more towards the right. As the mercury meets the heater wires, turning on the heater. The tilt of the mercury switch is changed due to adjusting the temperature setting lever. To tilt the mercury switch to the on or off position, a change of the different amounts of temperature is required.
Conclusion:
Thus, for tilt, the mercury switch to the on or off position, a change of the different amounts of temperature is required.
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