Explain the operation of the circuit in the accompanying figure.
What will be an ideal response?
Rung 1 of Figure 22–6 is your basic three-wire motor control circuit for controlling the motor output. In addition to the Start and Stop push buttons in Rung 1, you will also notice an N.C. contact labeled “Motor Starter Fault” that is in series with the motor output coil. This contact is used to turn OFF the output to the motor starter during a motor fault condition. Rung 2 of Figure 22–6 is the Motor Starter Fault Monitoring Logic that was described in Example 3, always monitoring the motor starter for abnormal conditions. Rung 3 and 4 set up a 1/2 second flasher circuit to be used in Rung 5 for flashing the motor pilot light when a motor fault should occur. Keep in mind that this flasher circuit could be located at the beginning of your program and used in any of the pilot light circuits in your program as needed. Rung 5 is the Motor Pilot Light circuit with Motor Fault Flasher included.
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The ____________________ are identified on the print by a letter or a number and a name for referencing purposes.
Fill in the blank(s) with the appropriate word(s).
The goal of this text is to increase knowledge and appreciation of the challenges of ____
a. horticultural expression b. professionally maintaining plants indoors c. maintaining a horticutural business d. producing vegetation
The major consequence of the Allied conquest of Sicily in August 1943 was
A. a modification of the demand for unconditional surrender of Italy. B. the overthrow of Mussolini and Italy's unconditional surrender. C. the swift Allied conquest of the Italian peninsula. D. a conflict between Churchill and General Eisenhower over the invasion of the Italian mainland. E. the threat of a Communist takeover of the Italian government.
To ensure critical steps are not missed in an IAQ test procedure, the technician should:
A) Use an IAQ checklist. B) Record all readings both electronically and on paper. C) Use an electronic IAQ meter with integral prompts. D) Take all readings twice.