B. fixed

3. A_____converts the digital output signals back to analog signals.

A. bus
B. register
C. triac
D. DAC

D. DAC

4.  Two styles of PLC's are____

         A. Mounted and unmounted

B. Fixed and modular
           C. Vertical and horizontal set
        D. Square and rectangular

5.  A port designated as I:214 is _____.

A. Input for slot 4 terminal screw 2
B. Input for slot 2 terminai screw 4

       C. lnput for terminal screws 2 through 4
  D. Input for terminal screws 7 and 4

6. A sourcing output module shouid be

connected to a ______

         A. sinking input module
  B. sink type switch

C. sinking sensor
  D. sourcing sensor

7. In the PLC communication configuration what channel is normally used to program the PLC.

A. channel 0
B. channel 1

         C. channel DH-485
         D. channel RS-232

8. BAUD rate measures____

  A. clock cycles
B. frequency

        C. bits per second
                  D. characters per second

9. The DFl protocol allows for____.

                      A. single master/ multi-slave network

                      B. single slave/ multi-master network

                       C. single master/ single slave network

                      D. multi-master/ multi-slave network

10. What is the PLC mode that a program

can be modified in?

      A. disable
                  B. offline program
C. off
 D. run

11. If all the units are in one fixed enclosure, the PLC is called a_______PLC.

     A. moduiar
B. fixed
    C. discrete
                    D. None of the above.

 B. fixed

12. The four major components of a PLC power supply are a line conditioner or varistor, transformer/rectifier unit,
RC filter, and _______.

A. valve
      B. fixed PLC
         C. zener diode
               D. microprocessor

13. A _________converts the digital output signals back to analog signals.

A. bus
      B. register
 C. triac
 D. DAC

14. Two typical values that discribe a PLC are

A. size and color
                B. frequency and bus width

                C. electical power and heat

       D. force and velocity

15. To protect a discrete input module from damage what component is used?

 A. bridge rectifrer
B. optical isolator
   C. octal transciever

         D. zener diode            

16. On a discrete output module what component holds the output at a contant level until it is changed?

        A. octal latch
          B. optoisolator

C. RAM
 D. relay

A. octal latch

17. The PLC Power supply_____

A. Generates AC voltage to power lights andmotors
B. Supplies power to PGE                                     
     C. Typically transforms line AC voltage to DC voltage to power the PLC circuits
D. All of the above                                               

C. Typically transforms line AC voltage to DC voltage to power the PLC circuits

18. A programmable automation controller is_____.

A. A PC with a PLC architecture
B. A PLC with a PC architecture

C. Guard Logic device             
D. an SLC500                        

A. A PC with a PLC architecture

19. What is the smallest Allen Bradley PLC series

A. Nano Logix

B. Pico Logix  

C. Micro Logix
 D.Micron Logix

B. Pico Logix

20. To program the Allen Bradley PLC's you will use

A. the RSLogix500 program
  B. the RSLogix5000 program

C. the RSlinx program        
             D. the Rockwell Automation Program

A. the RSLogix500 program

21. For the 5 digit decimal number 83456, the digit 3 has a power of____

 A. x 10
     B. x 10^3

     D. x 10^5

     C. x 10^4

22. An integer number has a weight that is______

A. Posititive powers of ten
B. Negative powers of ten

                C. Positive or Negative powers of ten
D. Under or Over             

A. Posititive powers of ten

23. 11111 + 10101 in binary equals______

A. 110100
B. 111010

 C. 1010101
D. i001011

24. 11111 - 10101 binary equals______

A. 110101

B. 1101    

C. 1010    
D. 10101

25. dividing 10101 by 101 in binary is____

        A. l00 binary with a remainder of 1

B. with a remainder of 1/5    

C. l00 binary                        

D. 4 binary                         

26. 110101101010010011010 binary in hex is_____

A. 1ABCD  

B. ABC1A  

C. 1AD49A

D. D644DA

27. D1AC hex in binary is___

A. 1011100101011100

B. 1101000110101100

 C. 11011011101010110

D. 1110111001011100

28. 573 octal in binary is_____

A. 101100111

B. 110101111

C. 110110110

D. 101111011

29. 1000110111010001001 in BCD is_____

A. 94732

B. 23749

C. 8DD21

D. 86549

30. ASCII codes are transmitted as____.

A. A symbol                                                                    B. two hex digits that are one byte long of code                

C. two hex digits that are 7 bits of code plus one parity bit

D. two hex digits that are 2 alphabets                              

31. The following switch is______

[image]

 A. single pole single throw
B. single pole double throw

C. double pole single throw
 D. double pole double throw

32. The following switch is____

[image]

A. single pole single throw
B. single pole double throw

C. double pole single throw

D. double pole double throw

33. The following is a ________ switch

[image]

A. Proximity
B. Pressure 

C. Level     

D. Limit     

34. The following switch is_______

[image]

A. Normally Open                 
B. Normaliy Open Held Open 

C. Normally Closed Held Open
D. Normally Closed               

35. A proximity switch uses what two primary components?

A. a magnetic coil and spring loaded shaft
B. a transformer and rectifier                  

C. an LED and Phototransistor                 

D. a capacitor and an inductor                

36. an inductive proximity sensor can detect______.

A. metallic objects                                 
B. non-metallic objects                          

C. both metallic and non metallic objects
D. only inert objects                             

37. a relay is most similar to a_______.

A. mechanical switch              
B. electrically controlled switch

C. solinoid                             
D. logic gate                          

38. The following switch [image] is represented by what contact symbol?

A. [image] 

B. [image]  

C.  -[0]-

D. -[1]-

39. The following switch [image] is represented by what contact symbol?

A. [image] 

B. [image]  

C.  -[0]-

D. -[1]-

40. The electrical schemat symbol for a relay is?

A. [image]       B. [image]

                 C. [image]                  D. All of the above     

41. You can only place one output device per rung; therefore, so you cannot place any output devices in ____.

A. Parallel                
B. series                  
C. junction               
D. None of the above

42. The device that must be placed as a last device on a rung of a relay logic diagram is a(n)____ device.

A. output      
B. input        
C. discrete    
D. indiscrete 

43. A motor can operate in continuous run mode or in temporary run mode, also called _ mode.

A. run 
B. jog 
C. skip
D. stall

44. Another name for a Relay Logic Diagram is______.

A. PLC LadderDiagram                 
B. Ladder Line Logic Diagram       

C. Relay Lader Logic Diagram       
D. Elementary Line Logic Diagram

45. The following figure has how many rails?

[image]

A. 1          C. 3

B. 2          D. 4

46. The following figure has how many Rungs?

[image]

A. 1          C. 3

      B. 2           D. none

47. This figure is a______

[image]

A. Jogging Circuit          C. Seal-in/Latching Circuit

B. Solinoid Circuit          D. Make Break Circuit      

48. what is wrong with the following circuit?

[image]

A. It needs a contact instruction
B. It needs a load                    
C. The rung is arranged wrong 
D. Nothing                             

49. What is wrong with this circuit?

[image]

A. It has too many loads                        
B. It is arranged wrong                          

C. CR-1 and CR2-1 contacts are reversed

 D. Nothing                                            

50. In the following circuit 2PB is the_______.

[image]

A. Start Button         
B. Stop Button          
C. Seal-in Button      
D. Emergency Button

51. To maintain the same logic function as the Figure 6-1 circuit the PLC Ladder Logic Diagram must use what
PLC intruction for CRl

[image]
A. XIC      
B. XIO      

C. OTE      

D. B3:0/0 

52.                                                                        

[image]

[image]

53.                                                                        

[image]

Definition