Question

which of the following is often used as an actuator to control other actuators when the computer needs to control a high - current load?
a. solenoids
b. thermistors
c. motors
d. relays

Explanation:

• Solenoids are actuators that directly convert electrical energy to linear motion, not for controlling high-current loads indirectly.
• Thermistors are sensors that detect temperature changes, not actuators.
• Motors are actuators that produce rotational motion, not used to control other high-current actuators.
• Relays use a low-current signal to switch a high-current circuit, making them ideal for a computer to control high-current loads or other actuators safely.

Answer:

d. Relays