Discussing how programmable thermostats work

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Reference no: EM13870306

1. Two students are discussing how programmable thermostats work. Student A says that a piece of material within the thermostat changes length depending on moisture content of the air and that temperature is related to this change in moisture. Student B says that there's a material within the thermostat that changes its length based on temperature and that the measured temperature is related to the change in length. Which of the following statements is correct?

A. Only Student A is correct. C. Both students are correct. B. Only Student B is correct. D. Neither of the students is correct.

3. In the same home that has 120 V service, the thermostat controlling the electric resistance heaters consumes 5 watts of power. How much resistance in Wis associated with the thermostat?

A. 24 W C. 4.8 W
B. 480 W D. 2880 W

4. Two students are discussing electric heaters. Student A says that the most common convection-type heating unit used is an electric floor-insert heater. Student B says that electric cabinet heaters are the most common natural-convection type electric heaters. Which of the following statements is correct? A. Only Student A is correct. C. Both students are correct. B. Only Student B is correct. D. Neither of the students is correct.

Reference no: EM13870306

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