Answer the following statement(s) true (T) or false (F)
1. If the switch is closed, there is no complete path for current flow, and the motor will not operate.
2. Interlocking is used to prevent some function from happening until some other function or action has occurred.
3. Inching applies full voltage to the motor and jogging applies reduced voltage to the motor.
4. The on-delay timer is often referred to on a schematic as DODE.
5. A normally open time-operated contact is connected in series with a pilot light.
1. False
2. True
3. False
4. False
5. True
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Which characteristic automatically categorizes a crane operation as a critical lift?
a. The load is nearly 75 percent of the crane’s load-chart capacity. b. The operation involves a multi-crane lift. c. The crane must travel with the load. d. High-voltage power lines cross the facility involved in the lifting operation.
Which of the following statements is true?
a. Systems with fixed metering devices cannot be charged accurately using the superheat method. b. Systems with fixed metering devices cannot be charged accurately by weight. c. Systems with TXVs cannot be charged accurately using the superheat method. d. Systems with TXVs cannot be charged accurately by weight.
The high and low sounds of your voice are called:
a. monotones b. volumes c. verbal fillers d. pitch
A decoupling membrane is a flexible ____ sheet that is placed between tile and concrete with an adhesive.
A. plastic B. felt C. fiberglass D. foam