The proper selection of a respirator is based on the _____
a. user's size and level of activity
b. contaminant present and its concentration
c. amount of time it will be worn
d. wearer's personal preference
b
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If more current is flowing out of the battery than the alternator, it is said to be ____________________.
Fill in the blank(s) with the appropriate word(s).
Describe cable assemblies.
What will be an ideal response?
Smoke detectors should be placed on the ceiling or high on a wall. Dead air spaces should be avoided. Where does dead air spaces occur?
A. in the middle of the ceiling B. all areas of the room above 6 feet C. the four sides of a room where the walls meet each other D. at the top edge of a room where the ceiling and wall meet.
Calculate the following:
A 500 hp, three-phase, 2200 V, 60 Hz, 12-pole, Y-connected wound-rotor
induction motor has the following parameters:
a. Slip at maximum torque
b. Input current and power factor at maximum torque
c. Maximum torque
d. Resistance that must be added to the rotor windings (per phase) to achieve
maximum torque at starting