In a lockout/tagout situation, a personal lock and tag must be removed by _____
a. a supervisor
b. a competent person
c. a qualified person
d. the person who applied them
d
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Knife switches rated more than ____, and at over 1000 amperes at 251 to 1000 volts, shall be used only as isolating switches and shall not be opened under load.
A. 1000 amperes at 250 volts or less B. 1100 amperes at 200 volts or less C. 1200 amperes at 250 volts or less D. 1200 amperes at 200 volts or less
Three forms of energy used in the heating and air conditioning include:
A) Solid, liquid, and gas. B) Preheat, setpoint, post heat. C) Saturation, subcooling, superheat. D) Electrical, magnetic, mechanical.
To ensure quality products, which item is most important to include?
A. Double-check your work. B. Design quality in from the outset. C. Use a high-tech CAD software program. D. Use only the most expensive materials.