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About the Multiple Choice Questions category
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0
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455
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February 3, 2021
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If ac is applied to a diode, and the peak ac voltage never exceeds the avalanche voltage, then the output is ___
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1
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785
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November 26, 2022
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For the PLC analog I/O control system shown, the fluid flow is controlled by ___
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2
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232
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October 7, 2022
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A sequential logic circuit where the storage elements commonly used are time-delay devices (usually gates) ___
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0
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138
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April 6, 2021
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The retentive timer reset (RES) instruction is always given the same address ___
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0
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122
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July 6, 2022
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Some PLC counters operate on the leading edge of the input signal
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0
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149
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July 8, 2022
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The counter accumulated value is the current count based on the ___
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0
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141
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July 8, 2022
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The main difference between a PLC retentive and non-retentive timer is ___
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0
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509
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July 8, 2022
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Fiber optic sensor systems are completely immune to all forms ___
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0
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77
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July 20, 2022
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In a PLC system, there is a physical connection between field input devices ___
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0
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115
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July 25, 2022
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The input/output system forms the interfaces through which field devices ___
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0
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69
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July 25, 2022
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A personal computer communicates with the PLC processor ___
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0
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79
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July 25, 2022
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PLC systems usually require as much space in an enclosure ___
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0
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71
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July 25, 2022
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The maximum current rating for the individual outputs of an AC output module ___
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0
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64
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July 25, 2022
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Shielded twisted pair cable is used for connecting to thermocouple inputs ___
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0
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107
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July 25, 2022
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The processor may perform functions such as timing, counting, and comparing ___
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0
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73
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July 25, 2022
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If you had a hand-held programming terminal from one manufacturer ___
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0
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116
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July 26, 2022
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Hot swappable I/O modules are designed to be changed ___
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0
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90
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July 26, 2022
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Light is used in I/O modules to separate the real-world electrical signals
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0
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62
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July 26, 2022
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HMI screens are developed using a software package on a PC ___
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0
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87
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July 26, 2022
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The sum of the backplane current drawn for all modules in a chassis ___
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0
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93
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July 26, 2022
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The PLC chassis comes in different sizes according to the ___
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0
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133
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July 31, 2022
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The schematic diagram is an example of how a PLC output module is connected to ___
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1
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97
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August 1, 2022
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Batteries are used in a PLC's processor to ___
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0
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137
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August 1, 2022
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Electronic components found in PLC modules ___
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0
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127
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August 1, 2022
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The most commonly used programming device is a ___
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0
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65
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August 1, 2022
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When placed in the ___ mode, the processor does not scan/execute the ladder program
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0
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111
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August 1, 2022
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For the processor module shown, Block 1 represents the ___
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0
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102
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August 1, 2022
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The processor module of the PLC is where the ___
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0
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119
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August 1, 2022
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The ___ of an analog I/O module specifies how accurately an analog value can be represented digitally
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0
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77
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August 1, 2022
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