101 Basic Series - Module 24 - Post Assessment Your final score on this exam will be emailed to you for your records. First name:   Last name:   Company name:   E-Mail Address   City   State   NO STATEALAKASAZARCACOCTDEDCFMFLGAGUHIIDILINIAKSKYLAMEMHMDMAMIMNMSMOMTNENVNHNJNMNYNCNDMPOHOKORPAPRPWRISCSDTNTXUTVTVIVAWAWVWIWY Province (Optional)   Country (Optional)   1 Hundreds of I/O devices can be controlled with rack mounted PLCs. True False 2 PLC scan time is defined as the time it takes the PLC to ____. Check the input status Execute the program Update the output status All of the above None of the above 3 CPU stands for Control Processing Unit. True False 4 A PLC scan cycle consists of three important steps: check the input status, execute program, and update output status. True False 5 Three things must be known before a counter can be used: address of the input pulse, how many pulses before reaction, when and how the counter is reset. True False 6 An alarm horn is an ____ device to a PLC. Input Output Both 7 Communications with PLCs can be done between "Master" CPUs to "Slave" expander units in remote I/O networks. True False 8 ____ are connected to the outside world, physically exist, and receive signals from switches, sensors, etc. Input relays Internal relays Output relays Timers 9 A photoelectric, proximity sensor, or limit switch is an ____ device to a PLC. Input Output Both 10 ____ are connected to the outside world, physically exist, and send signals to solinoids, lights, etc. Input relays Internal relays Output relays Timers Counters 11 Typically, PLC counters count from ____ if they are 16-bit BCD (binary coded decimal). 0 to 9999 -32,768 to 32,767 0 to 65,535 None of the above 12 These are symbols used to indicate a ________. Normally Open Input Contact Normally Closed Input Contact Normally Closed Output Contact Output Device (Coil) 13 A timer is an instruction that waits a set amount of time before doing something. True False 14 Relay ladder logic utilizes basic relay wiring symbols to create the logic to control a machine or process. True False 15 PLC registers store the off and on states of the instructions based on their address. True False 16 The primary reason PLCs were developed was to eliminate the large cost of replacing complicated relay-based machine controls. True False 17 Hard-wired devices are used to configure PLC logic. True False 18 PLCs come in two basic forms: Block I/O and Rack mount I/O. True False 19 A PLC uses logic functions which are programmed into its memory. True False 20 The numbering system in computers and PLCs is the decimal system. True False

Created and managed with SmartLite WebQuiz XP