Exam 20: Motor Control Devices and Circuits

A(n) ____ sensor houses the transmitter and receiver in a single unit.

____ switches are automatic devices that consist of an actuator, a body, and one or more contact blocks.

Which object characteristics are most easily detected with a diffuse sensor?

Which type of sensor is designed to sense an object but ignore the background?

There are three basic methods of operating a photo switch: thru-beam, retro-reflective, and specular.

Push buttons may operate on a momentary basis or be mechanically held.

The ____ sensor utilizes a focusing lens to create a focal point.

Rotary switches are sometimes known as ____ switches.

Thru-beam sensing may be used over distances up to ____ feet.

There are essentially two different types of motor starters, the standard motor starter and the ____ motor starter.

A(n) ____ is a signaling apparatus that may be audible or visual.

Photoelectric switches consist of three basic components: the transmitter, the receiver and the switching device.

Photoelectric switches are contact sensors.

A capacitive proximity switch cannot sense nonconductive (nonferrous) material.

A relay with heavy-duty contacts is called a(n) ____.