test 3 Flashcards
Transformers are used to increase generated _____ to a high level for transmission across the country.
voltage
A switch contact which changes states when actuated but returns to its initial state when the actuation is remove is called a ______
momentary switch
______push buttons have an actuator that extends over the edge of the mounting ring and usually protrudes beyond the top edge of the mounting ring.
Mushroom head
Most _______consist of single lines and graphics that illustrate the relative location and connection of the devices installed.
one line diagrams
_____switches translate mechanical movement of position into electrical signals
Limit
Level devices are commonly referred to as ____switches
float
_______ are often included by the manufacturer in their documentation to illustrate the proper connection for each device.
Wiring diagrams
Another name for the neutral zone within a sensors signal range where no action occurs in the system is the ________
deadband
The contact for a normally open contact on a push button switch would be classified as a _______
single pole double break
The 3 Categories of pressure devices are
- Positive
2. Vacuum
3. Differential
A hand, off, auto selector requires a ___ position operator and a minimum of ____ contacts
3 / 2
What term used to describe a relay used to switch a high power circuit using low power control voltage in a control circuit
interposing relay
Why is a double break contact used in switches instead of single break switches?
Smaller arcs and smaller contacts
Start buttons in _____and stop buttons in _____
parallel / series
Name 3 types of lamps in signaling devices
LED
Strobe
Incandescent
