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Q1: 20. A tachometer normally refers to a(n) _______ used for speed measurement. a. load cell c. ultrasonic sensor b. capacitive proximity sensor d. small generatorSee Answer
Q2: 10. Use at least five of the following words in a correct sentence: vulnerability, threat agent, threat,asset, attack, exploitSee Answer
Q3: 47. If you wanted output PL to go on after a count of 40,000, you would change the preset count of C5:1 to: а. 9,999. b. 6,000. с. 8,000. d. 12,000.See Answer
Q4: 25. For the programmed latching operation shown, which two instructions must have the same address? a. ON and OFF inputs. b. latch and unlatch outputs c. ON input and latch output d. OFF input and unlatch outputSee Answer
Q5: 21. An encoder is used to: a. encode signals from a scanner b. decode signals from a scanner c. change DC to AC d.convert motion into a digital signalSee Answer
Q6: 13. The symbol shown is that for a: .а.pressure switch. b. temperature switch. c. limit switch d. proximity switch.See Answer
Q7: 33. For the timer table shown, bit level addressing is used for: a. EN, TT, PRE and ACC b. EN, TT, and DN c. PRE, ACC, TT and EN d. PRE and ACCSee Answer
Q8: 6. Counters are similar to timers, except that they do not operate on an internal clock. a. True b. FalseSee Answer
Q9: 39. For the programmed timers shown, the output of timer T4:5 : а.turns on after a 10-s time delay and remains on. b. turns off after a 2-s time delay and remains off. c.turns on after a 3-s time delay and remains on. d. is pulsed on and off at 1-s intervals.See Answer
Q10: 8. All up-counters count only to their preset values, and additional counts are ignored. a. True b. FalseSee Answer
Q11: 1. For the timer relay contact shown, when the relay coil is energized, there is a time delay before the contact opens. a. True b. FalseSee Answer
Q12: 14. The symbol shown is that for a: a. solenoid valve. b. motor starter coil. c.overload relay coil. d. overload relay contact.See Answer
Q13: 11. In the hardwired relay control circuit shown, when the switch is closed, CR coil is: a. energized, and the red and green lights are both on. b. de-energized, the red light is off, and the green light is on. c. energized, the red light is on, and the green light is off. d. energized, the red light is off, and the green light is on. See Answer
Q14: 12. A proximity switch can be actuated: a. without any physical contact. b. by a change in light intensity. c. by a change in capacitance. d. by all of the these.See Answer
Q15: 3. A lamp is to be switched off 10 s after a switch has been switched from it's on to off position. The most directly applicable timer to use would be the off-delay nonretentive timer. a. True b. FalseSee Answer
Q16: 24. The electromagnetic latching relay: a. is used to lock in a condition b. uses a latch coil to set and hold the relay in the latched position. c. uses an unlatch coil to disengage the mechanical latch. d. all of these.See Answer
Q17: 37. For the program shown, the timer starts timing when: a. PB1 is closed. b. PB2 is closed. c. both PB1 and PB2 are closed. d. either PB1 or PB2 is closed.See Answer
Q18: 19. The sensor illustrated is a: a. thermocouple b. turbine flow meter c. strain gauge load cell d. retroreflective sensorSee Answer
Q19: 18. A(n) _______ operates by sending sound waves toward a target and measuring the time it takes for the pulses to bounce back. а.pressure sensor b. bar code scanner c. ultrasonic sensor d. flow meterSee Answer
Q20: 32. For the timer circuit shown, the timer accumulated value will reset to zero whenever: a. input A switch is opened b. input A switch is closed. C.the DN bit is set to 1. d. the EN bit is set to 1. See Answer

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