Printreading Chapter 11 A True, B -False 1. Control transformers are located in

Question

Printreading Chapter 11 A True, B -False 1. Control transformers are located in the control circuit panel and provide power for all loads in the coetrol circuit. Although a circuit can have any number of switches and loads, the total number of switches determines the reqaired wire size and the wiring of the power supply An understanding of line diagrams is important during programmable logic controller PLC programming because most PLC software uses the ladder diagram format for circuit design 3. 5 4. Loads cannot be coenacted in pwrallel with more than onc load is connected to the same control saction of a ladder diagram Control relay coils, solenoids, alarms, and pilot lights are examples of loads that are connected 6. Numbering each line in a control circuit allows for faster idendification of the location of devices 7. Control devices such as pushbuttons, limit switch, and pressure switches are connected into a 8. OR circuit logic is a control function that allows a load to be energized on as long as the contro 9 The control circuit part of a manufacturer's schematic diagram is not always drawn in standard 2 When a terminal strip is used, cach wire in a control circuit is assignod a reference point on a directly to L2 in a line diagram. and components in smaller individual circuits. circuit so that the circuit can function in a prodetermined manner switch or contact is not activated ladder diagram format; however, the drawing will follow all rules of letter diagrams ladder diagram, and each reference point is assigned a reference number pan 1. Asamy component in a line diagram that consumes power from Li. A. Load. B. Circuit. C Terminal. D. Device. 12are connected between LI and the load on a ladder diagram. A. Pushibuttons. B. Limit switches. C. Pressure switches. D. All of the above -A i 3 When a terminal strip is used, each wire in a control circuit is assigned a reference point on a ladder diagram, and each reference point is assigned a reference number 14 areconnected between L1 and the load on a ladder diagram A Pushbuttons. B Linnt switches. C. Pressure switches. D. All of the above. 15 Q ystems are necessary to trace the action of a circuit and complex line diagrams. A Numerical cross-reference. B. Wire reference number. C. Dashed Line. D. Terminal number.

Explanation / Answer

7. A switch is used to make or break a circuit, such that when it is operated, it directs the current in a way so as to trigger specific parts of a circuit. Hence, it is designed to carry out pre-determined functions on trigger

For example: The thermostat in air-conditioning units are temperature operated switches, which turn the unit ON / OFF based on pre-determined values of ambient temperatures.

Answer: True (A)

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