When servicing and lubricating a motor, why must a technician use the proper oil?
What will be an ideal response?
If the oil is too thin, it will drip readily, not providing adequate coating and allow the shaft to rub against the bearing surface. If the oil is too thick, it will not flow correctly to reach all desired locations (for example, between the shaft and bearing).
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When sizing a cooling tower, the tower is sized to handle the cooling load of the conditioned area plus about ____% for heat of compression.
A. 0 B. 15 C. 25 D. 35
The total amount of series resistance offered to the flow of current is ____ to the sum of all the resistors in the circuit.
a. the same as b. not related to c. proportional d. inversely proportional
Which one of the following has a toggle operating state?
A) D latch B) D flip-flop C) J-K flip-flop D) S-R latch
When turning off the electrical power at a disconnect panel to work on an electrical circuit, what should you do to ensure that no one will turn the power on until you have finished and are ready?
What will be an ideal response?