26211 - Control systems and fundamental concepts
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/12
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
13 Terms
On magnetic contactors, which contacts are said to be normally closed (NC)?
Contacts that are together when the relay is deenergized
3 multiple choice options
What is a shading coil used for?
Prevent contact chatter
3 multiple choice options
In machines associated with industrial plants, the overload relays typically activate which of the following?
Alarm circuit
3 multiple choice options
What is a contactor whose action is dependent on current flow best described as?
Electrically held
3 multiple choice options
Which is a classification of overload relays?
Magnetic
2 multiple choice options
Which of the following is a non-renewable device?
Time-delay fuse
3 multiple choice options
Which of the following can be used to control the lubrication of a large industrial motor at prescribed intervals?
Timing relay
3 multiple choice options
How is an opto-isolated solid state relay activated?
Light
3 multiple choice options
Which of the following is a probable cause of equipment, controlled by a relay failing to start when the contractor is closed?
One contact not closing
3 multiple choice options
What are melting alloy and bimetallic overload relays designed to do?
React to current overload conditions in the motor circuit
3 multiple choice options
What is the power to operate low voltage switching systems supplied by?
A transformer
3 multiple choice options
What is the symbol shown in the figure provided used to denote (diamond T in the middle)
Low voltage transformer
3 multiple choice options
What type of coil arrangement should be in low-voltage remote control switching relays?
A single coil
3 multiple choice options