Employers and employees are responsible for hazardous materials
A) Only until they are used B) From cradle to grave
C) Only on Wednesdays and Thursdays D) Never
B
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____ type cores are constructed by tightly winding one long continuous silicon steel tape into a spiral.
a. Shell b. Horn c. Toroid d. E-I
Shoring in excavations is created by _____.
a. compacting loose soil on the sides of a trench b. cutting the walls of the excavation back to an angle c. supporting the walls of excavation to prevent their movement and collapse d. placing a box-like structure in an excavation and backfilling it
Answer the following statement(s) true (T) or false (F)
1. Two-wire motor control circuits are extremely complex motor control circuits. 2. Two-wire motor control circuits are called two-wire because there are only two control circuit wires between the motor starter and the control device(s). 3. Pilot devices control the motor starter control coil. 4. A pilot device is the term given to any two-wire control circuit component that mechanically closes and opens its control contacts, depending on the state of the medium it is measuring. 5. Two-wire control provides both no-voltage drop-out protection, or low-voltage drop-out protection.
Feet of water is a measure of _____
a. head pressure b. column pressure c. dynamic pressure d. pipe friction