EGR 450 QUIZ QUESTIONS WITH
100% CORRECT ANSWERS
What does PLC stand for? - Answer- Programmable Logic Controller
Which can typically handle more current? - Answer- Contactor
For safety is it better to use 2 wire or 3 wire control? - Answer- 3 wire control
A motor starter contains an overload relay to protect the motor and it also contains
a....... - Answer- Contactor
The invention of the PLC is commonly attributed to........ - Answer- Richard Morley
What does EMI stand for? - Answer- Electromagnetic Interference
Who won the "War of Currents"? - Answer- George Westinghouse
The inventor of the electromechanical relay was........ - Answer- Joseph Henry
A form 'C' contact has... - Answer- both one normally open and one normally closed
contact
What does JSR in the ladder instruction stand for? - Answer- Jump to Routine
The hexagon objects on the prints haves two numbers - upper and lower. What is the
purpose of the upper number?
a. none of these
b. the wire number
c. the sheet number where the wire continues
d. the line number where the wire continues
e. the cross reference # - Answer- c. the sheet number where the wire continues
What is the cable # connecting the digital DC I/O with the Digital Simulator? - Answer-
C1
On the Digital Simulator which is NOT a true statement?
a. The toggle switch should be in the up position for the PB to be a momentary N.C.
signal.
b. If the toggle switch is down the PB must be held down to maintain the signal.
, c. The toggle switch should be in the down position for the PB to be a momentary N.O.
signal.
d. none of these
e. The toggle switch should be in the up position for the PB to be a momentary N.O.
signal. - Answer- e. The toggle switch should be in the up position for the PB to be a
momentary N.O. signal.
What is the catalog number of the solid state DC output module? - Answer- 1769-OB16
What is the size of the fuse in amps for the PV+? - Answer- 2
What color is the 120 volt AC hot wire? - Answer- red
What color is the ground wire typically? - Answer- green
What color is the DC + wire typically? - Answer- blue
What color is the 120 volt neutral? - Answer- white
A through beam photo eye configuration is also called............... - Answer- Opposed
To trip a reed relay we would use a ..... - Answer- magnet
Which sensor (switch) type creates an electromagnetic field? - Answer- inductive
proximity
A PNP sensor is........ - Answer- current sourcing.
Which is not one of the IEC61131-3 specified programming languages...........
Structured Text
Sequential Function Charts
Function Block Diagrams
Instruction List
Ladder Diagram
User Data Type - Answer- User Data Type
Which of these sensors listed most typically has "hard/dry" contacts.
limit switch
capacitive switch
relay output module
inductive proximity switch
none of these - Answer- limit switch
What does PAC stand for? - Answer- Programmable Automation Controller
Which type of photo eye configuration relies on reflector placement?
100% CORRECT ANSWERS
What does PLC stand for? - Answer- Programmable Logic Controller
Which can typically handle more current? - Answer- Contactor
For safety is it better to use 2 wire or 3 wire control? - Answer- 3 wire control
A motor starter contains an overload relay to protect the motor and it also contains
a....... - Answer- Contactor
The invention of the PLC is commonly attributed to........ - Answer- Richard Morley
What does EMI stand for? - Answer- Electromagnetic Interference
Who won the "War of Currents"? - Answer- George Westinghouse
The inventor of the electromechanical relay was........ - Answer- Joseph Henry
A form 'C' contact has... - Answer- both one normally open and one normally closed
contact
What does JSR in the ladder instruction stand for? - Answer- Jump to Routine
The hexagon objects on the prints haves two numbers - upper and lower. What is the
purpose of the upper number?
a. none of these
b. the wire number
c. the sheet number where the wire continues
d. the line number where the wire continues
e. the cross reference # - Answer- c. the sheet number where the wire continues
What is the cable # connecting the digital DC I/O with the Digital Simulator? - Answer-
C1
On the Digital Simulator which is NOT a true statement?
a. The toggle switch should be in the up position for the PB to be a momentary N.C.
signal.
b. If the toggle switch is down the PB must be held down to maintain the signal.
, c. The toggle switch should be in the down position for the PB to be a momentary N.O.
signal.
d. none of these
e. The toggle switch should be in the up position for the PB to be a momentary N.O.
signal. - Answer- e. The toggle switch should be in the up position for the PB to be a
momentary N.O. signal.
What is the catalog number of the solid state DC output module? - Answer- 1769-OB16
What is the size of the fuse in amps for the PV+? - Answer- 2
What color is the 120 volt AC hot wire? - Answer- red
What color is the ground wire typically? - Answer- green
What color is the DC + wire typically? - Answer- blue
What color is the 120 volt neutral? - Answer- white
A through beam photo eye configuration is also called............... - Answer- Opposed
To trip a reed relay we would use a ..... - Answer- magnet
Which sensor (switch) type creates an electromagnetic field? - Answer- inductive
proximity
A PNP sensor is........ - Answer- current sourcing.
Which is not one of the IEC61131-3 specified programming languages...........
Structured Text
Sequential Function Charts
Function Block Diagrams
Instruction List
Ladder Diagram
User Data Type - Answer- User Data Type
Which of these sensors listed most typically has "hard/dry" contacts.
limit switch
capacitive switch
relay output module
inductive proximity switch
none of these - Answer- limit switch
What does PAC stand for? - Answer- Programmable Automation Controller
Which type of photo eye configuration relies on reflector placement?
