Any exposed live parts must be guarded if they are operating at _____.
a. 15V or more between terminals
b. 50V or more between terminals
c. 240V or more between terminals
d. 600V or more between terminals
b. 50V or more between terminals
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Common quantities of pressure arranged from smallest to largest are:
A) Pascal, kilopascal, psi, bar. B) Bar, kilopascal, psi, pascal. C) Psi, pascal, kilopascal, bar. D) Pascal, psi, kilopascal, bar.
Why must zeotropic refrigerant leave the cylinder as a liquid?
A) To avoid fractionation B) To reduce the risk of non-condensables entering the system C) To keep the pressure in the cylinder at a safe level D) To avoid condensation
Ultraviolet air treatment systems are used on __________ systems and are most effective when used in conjunction with a __________ media.
What will be an ideal response?
The percentage of heat rise in the motor caused by the voltage unbalance is equal to ____ times the percent squared.
A. two B. three C. four D. five