A device that converts a nonelectrical impulse such as sound, ...

[frankwu]

A device that converts a nonelectrical impulse such as sound, heat, light, or pressure into an electrical signal is called:
 
  A) An actuator. B) A switch. C) A sensor. D) A sending unit.

Question 2

When is the Y terminal energized on most heat pump thermostats?
 
  A) Anytime the system is energized B) In first stage cooling only
  C) Both first-stage heating and cooling D) In first stage heating only

[underwood14]

Answer to Question 1

C

Answer to Question 2

C

[frankwu]

YES! Correct, THANKS for helping me on my review

[bblaney]

Excellent