When assisting a person who is in contact with an electrical source, it is generally safe to touch him or her.
Answer the following statement true (T) or false (F)
False
Rationale: Never touch a person who is in contact with an electrical source.
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Which of the following is TRUE of a medium-temperature refrigeration unit?
A) It requires 1 hp to produce 1-1/3 tons of cooling. B) It requires 1 hp to produce 1/3 ton of cooling. C) It requires 1 hp to produce 1 ton of cooling. D) It requires 1 hp to produce 2/3 ton of cooling.
Convert decimal 12 to octal
A) 148 B) 168 C) 128 D) 108
Without the benefit of 60 Hz line voltage input, 1 pulse per second clock frequency could be generated by:
A) a crystal oscillator. B) a 555 timer and Schmitt-trigger. C) a Schmitt-trigger and MOD 60 counter. D) Either A or B
The infrared humidifier consists of a horizontal water reservoir and infrared lamps with _____
a. plates b. a sponge c. reflectors d. heaters