FUNDAMENTALS OF COMPUTER

COMPUTER HARDWARE COMPONENTS FUNCTIONS

COMPUTER OUTPUT DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is an actuator?
A
A device that outputs information from a physical source
B
A device that inputs information from a physical source
C
A device that turns on a motor
D
A device that turns on LEDs
Explanation: 

Detailed explanation-1: -An actuator is a device that converts energy into some kind of “operation", such as linear movement, rotation, or bending. In addition to electricity, the input energy comes in a variety of forms, such as air (pneumatic) or oil (hydraulic) pressure, magnetic force from electromagnets, steam, and heat.

Detailed explanation-2: -An actuator is a motor that converts energy into torque which then moves or controls a mechanism or a system into which it has been incorporated. It can introduce motion as well as prevent it. An actuator typically runs on electric or pressure (such as hydraulic or pneumatic).

Detailed explanation-3: -Electric actuators for stepped motion are known as stepper motor.

Detailed explanation-4: -Actuators operate using a combination of a motor and mechanical drive mechanism. By transmitting motor torque to the drive mechanism, actuators can convert it to motion that include linear or helical motion, as well as rotation. This enables actuators to drive a wide variety of devices.

Detailed explanation-5: -An actuator is a component of a machine that is responsible for moving and controlling a mechanism or system, for example by opening a valve. In simple terms, it is a “mover". An actuator requires a control device (controlled by control signal) and a source of energy.

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