Motor Controls - Exam Review
Questions
List the 4 types of circuit diagrams. - correct answer-Block, one-line, wiring, schematic
A ____________ diagram shows all the electrical connections between components,
without regard to their physical location or terminal. - correct answer-Schematic
______ ______ diagrams always show components in a state of rest. - correct answer-
Control Circuit
What is the purpose of a disconnecting switch? - correct answer-Isolates the motor from
the power source.
A pushbutton is a switch activated by ____________ ____________. - correct answer-
finger pressure
______ ______ are mainly used in low-powered circuits. - correct answer-Control
Relays
Industrial control involves 5 things in regards to a motor and its load. Name 5 things. -
correct answer-Starting, acceleration, reversal, deceleration, and stopping
What does PLC stand for? - correct answer-Programmable Logic Controller
How do you reverse the rotation of a three phase AC motor? - correct answer-Reverse
any 2 of the 3 line leads
Energizing the motor in short spurts so that it barley starts before it again comes to a
halt is called _________ or _________. - correct answer-Inching or Jogging
How are fuses rated? - correct answer-in Amperes
Name the 2 types of contacts. (By name, not by the acronym) - correct answer-Normally
Open and Normally Closed
______ ______ are sealed devices that can detect objects without coming in direct
contact with them. - correct answer-Proximity Detectors
A ______ ______ is a low-power snap-action device that opens or closes a contact,
depending upon the position of a mechanical part. - correct answer-Limit Switch
Questions
List the 4 types of circuit diagrams. - correct answer-Block, one-line, wiring, schematic
A ____________ diagram shows all the electrical connections between components,
without regard to their physical location or terminal. - correct answer-Schematic
______ ______ diagrams always show components in a state of rest. - correct answer-
Control Circuit
What is the purpose of a disconnecting switch? - correct answer-Isolates the motor from
the power source.
A pushbutton is a switch activated by ____________ ____________. - correct answer-
finger pressure
______ ______ are mainly used in low-powered circuits. - correct answer-Control
Relays
Industrial control involves 5 things in regards to a motor and its load. Name 5 things. -
correct answer-Starting, acceleration, reversal, deceleration, and stopping
What does PLC stand for? - correct answer-Programmable Logic Controller
How do you reverse the rotation of a three phase AC motor? - correct answer-Reverse
any 2 of the 3 line leads
Energizing the motor in short spurts so that it barley starts before it again comes to a
halt is called _________ or _________. - correct answer-Inching or Jogging
How are fuses rated? - correct answer-in Amperes
Name the 2 types of contacts. (By name, not by the acronym) - correct answer-Normally
Open and Normally Closed
______ ______ are sealed devices that can detect objects without coming in direct
contact with them. - correct answer-Proximity Detectors
A ______ ______ is a low-power snap-action device that opens or closes a contact,
depending upon the position of a mechanical part. - correct answer-Limit Switch
