Time clocks and photo cells are generally ____.

a. used to control AC motors
b. provided to monitor the contactors
c. provided for overload protection
d. used for lighting loads


d. used for lighting loads

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The ____________________, or electromotive force, is the voltage between the electrodes of a voltaic cell.

Fill in the blank(s) with the appropriate word(s).

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Decorative joints are used to _____

a. relieve stresses in large slabs b. create patterns and designs c. add color to concrete patios and driveways d. control concrete cracking

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When gas cylinders are disconnected from a plasma arc cutting unit before it is stored, be sure to _____

a. install a cap on the regulator outlet b. set the regulator to its maximum setting c. lay all cylinders down on their side d. replace the cylinder caps

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The best method for preventing sexual harassment in the workplace is _____

a. increase the victim?s compensation b. promote the victim to a new job c. establish a no-tolerance policy d. improve employee screening methods

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