An advantage of a "series flow" configuration of ground loops is ____.
A. smaller diameter pipes
B. ease of removing trapped air
C. lower installation costs
D. less antifreeze is required
Answer: B
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The term firestop refers to
A) a fire-rated floor with a minimum fire rating of 3 h. B) a fire-rated wall with a minimum fire rating of 3 h. C) a fire seal in a non-fire -rated wall or floor. D) a fire seal in a fire -rated wall or floor. E) none of the above.
____________________ methods require that a device turn with the same revolutions per minute as the motor.
Fill in the blank(s) with the appropriate word(s).
Which of the following are major causes of electrical shock?
A. Contact with bare wire carrying current. B. Electrical equipment that has not been properly grounded. C. Static electricity discharge. D. All of the above
Magnitude comparators compare a measured quantity to a ________ value
Fill in the blank(s) with correct word