Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
"Device, mechanical or electrical, that can operate, energize, or de-energize electrical or mechanical circuits using predetermined operating point or set point is a switch"
|
True
|
|
|
Overrides normal operation of device or system
|
Bypass
|
|
|
Actuates a circuit that terminates a process
|
Shutdown Switch
|
|
|
Notifies operator when a process variable enters an abnormal state.
|
Alarm Switch
|
|
|
A philosophy of connecting devices to a control system. |
Fail Safe
|
|
|
Used to start equipment or a process. |
Auto Start
|
|
|
Device that maintains or controls the flow of a signal so it can be properly received is a relay |
True
|
|
|
Two conductive pieces of metal that pass an electrical current. |
Contacts
|
|
|
As it pertains to process switches, the change in value between actuation and deactivation set points. |
Deadband
|
|
|
The number of positions that the switch can adopt.
|
Throw
|
|
|
The number of separate circuits controlled by a switch. |
Pole
|
|
|
Device used to pass information from high voltage system to a low system voltage. |
Interposing Relay
|
|
|
"Alarm circuit is de-energized; lights flash, horn sounds" |
Alarm Condition
|
|
|
"Conducted at beginning of a shift, triggers audible signal and intermittent fast flash." |
Test
|
|
|
Puts panel indicator back in ready position once problem is solved.
|
Reset
|
|
|
Alarm circuits are not activated and horn circuit is not activated. |
Normal Operating Condition
|
|
|
Shows order in which alarms came on.
|
First Out
|
|
|
Audible is silenced; first out alarm lights flash slowly and all subsequent alarms remain steady on. |
Acknowledge
|
|
|
Switches can be operated manually. |
True |
|
|
Which is a benefit provided by arc suppression technique? |
Reduce contact damage
|
|
|
Current/Pressure
|
I/P
|
|
|
Voltage/Current |
E/I
|
|
|
Current/Voltage |
I/E
|
|
|
Pressure/Current
|
P/I
|
|
|
Current/Frequency
|
I/F
|
