Question

What is the behavior of a heating thermostat that is normally closed and opens on increase (rise) or closes on decrease (drop) of temperature?

1) It opens on increase (rise) and closes on decrease (drop) of temperature
2) It closes on increase (rise) and opens on decrease (drop) of temperature
3) It remains closed on increase (rise) and opens on decrease (drop) of temperature
4) It remains closed on increase (rise) and closes on decrease (drop) of temperature

Answer 1

A heating thermostat that is normally closed and opens on increase (rise) or closes on decrease (drop) of temperature exhibits the behavior of closing on increase and opening on decrease of temperature.

Step-by-step explanation:

A heating thermostat that is normally closed and opens on increase (rise) or closes on decrease (drop) of temperature exhibits the behavior of:

2) It closes on increase (rise) and opens on decrease (drop) of temperature

When the temperature rises above the set point, the thermostat closes the circuit and turns off the heating source. Similarly, when the temperature drops below the set point, the thermostat opens the circuit and activates the heating source.