Title: Chapter #11 Test
Course: Programmable Logic Controls (IC 107-IC 107) > Section: Assessments

Q: Assume that the light is to come on after a total count of 120. As a result:
- the preset counter C5:0 must be changed to 120.
- the value in source B of the GEQ instruction must be changed to 120.
- the value in source B of the ADD instruction must be changed to 120.
- the value in word N7:1 must be changed to 120.
A: the preset counter C5:0 must be changed to 120.

Q: Assume the accumulated count of counter C5:0 and C5:1 to be 124 and 248, respectively. As a result:
- the number 372 will be stored in word N7:1 and output PL1 will be energized.
- the number 372 will be stored in word N7:1 and output PL1 will not be energized.
- the number 350 will be stored in word N7:1 and output PL1 will be energized.
- the number 350 will be stored in word N7:1 and output PL1 will not be energized.
A: the number 372 will be stored in word N7:1 and output PL1 will be energized.

Q: Assume the value stored in N7:0 is 90, the value stored at N7:1 is 3 and the constant for source B of the EQU instruction is 10. What would the state of PL1 be?
- Off
- On
A: Off

Q: For the program as shown, output PL1:
- would be energized.
- would not be energized.
A: would be energized.

Q: For the program below, the set-point temperature is set by the number stored in:
- N7:0.
- N7:2.
- I:012.
- I:013.
A: N7:0.

Q: In the program shown, the value of the number stored in N7:2 is:
- 172.
- 601.
- 325.
- 348.
A: 172.

Q: Math instructions are all ____________ instructions.
- output
- input
- binary
- BCD
A: output

Q: PLC's can use numerical data from the accumulated values of timers and counters with math functions.
- True
- False
A: True

Q: Rung No.2 will be true:
- at all times.
- when the number stored in word N7:1 is equal to 48.
- when the number stored in word N7:1 is less than 48.
- when the number stored in word N7:1 is greater than 48.
A: at all times.

Q: The amount of overfill weight required to trigger the alarm is changed by changing:
- the value of the number stored at input I:012.
- the value of source B of the GEQ instruction of rung 3.
- the value of source B of the GEQ instruction of rung 5.
- the value of the number stored in word N7:1.
A: the value of the number stored at input I:012.

Q: The negate instruction is used to change the sign of a number.
- True
- False
A: True

Q: The number stored in N7:1 represents the:
- upper temperature limit.
- lower temperature limit.
- current temperature of the oven.
- difference between the preset and current temperature.
A: upper temperature limit.

Q: The number stored in N7:3 is:
- 6.
- 60.
- 150.
- 300.
A: 6.

Q: The number stored in word N7:1 represents the:
- weight of the empty vessel.
- preset weight of the vessel.
- current weight of the vessel.
- difference between the current and preset weight of the vessel.
A: weight of the empty vessel.

Q: The program is telling the processor to energize output 0:2/3 whenever the sum of N7:5 and N7:8 is greater or equal to that of N7:4.
- True
- False
A: True

Q: The program is telling the processor to energize output 0:6/2 whenever the value of N7:8 is equal to that of N7:4.
- True
- False
A: False

Q: The rung logic is telling the processor to add the values stored in word N7:1 and N7:2.
- True
- False
A: False

Q: Which constant stored in source B of the EQU instruction would turn PL1 on?
- 24
- 20
- 6
- 4
A: 24

Q: Which math instruction would you use if you wanted to take the opposite sign of a value?
- SUB
- SQR
- NEG
- CLR
A: SUB

Q: Which math instruction would you use if you wanted to calculate the difference between the accumulated values of two counters?
- ADD
- SUB
- MUL
- DIV
A: ADD