Which Type of Optical Device Shuts Down the Machine Any

question 1

Multiple Choice

Which type of optical device shuts down the machine any time the light field is broken?

• A) Cathode ray tubes
• B) Electromechanical device
• C) Pullback device
• D) Radio-frequency device
• E) Photoelectric device

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Definitions:

Hip Bone

A large, irregular bone forming the upper part of each half of the pelvis, comprising the ilium, ischium, and pubis.

Acetabulum

The cup-shaped socket in the pelvis that receives the head of the femur, forming the hip joint.

Tarsals

The seven bones constituting the ankle and heel forming part of the foot.

Carpals

The eight small bones that form the wrist, connecting the hand to the forearm.