Technician a Says That If a Relay Is Normally Open

question 8

Multiple Choice

Technician A says that if a relay is normally open, it must be energized in order to complete the controlled circuit. Technician B says that if a solenoid-operated valve is normally closed, it must be energized in order to allow flow through it.Who is correct?

• A) Technician A only
• B) Technician B only
• C) Both technicians
• D) Neither technician

---

Definitions:

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, calculated as the square root of the variance.

Process Control Limits

Boundaries in a control chart within which a process operates normally, and outside of which the process may need correction.

Specification Limits

Predetermined boundaries or limits within which a product, result, or characteristic must fall to be considered acceptable for its intended purpose.

Random Variation

Fluctuations in data or observations that lack a predictable pattern and arise from random factors.