Which of the following is an example of an HCFC refrigerant?
A. R-12
B. R-402
C. R-22
D. R-134a
Answer: C
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The standard measurement for surface finish is the micro inch. Which of the following is correct?
A) The rougher the surface, the higher the micro inch finish measurement B) The rougher the surface, the lower the micro inch finish measurement C) The smoother the surface, the higher the micro inch finish measurement D) Both B and C
Reserve capacity is the number of minutes a battery can produce 10.5 volts with how many amps?
A) 30 B) 25 C) 20 D) 10
Which type of hammer is plastic coated, has a metal casing inside, and is filled with small lead balls?
A) Soft-blow hammer B) Dead-blow hammer C) Sledgehammer D) Plastic hammer
A signal received at the Fire Command Station indicating the need for action in connection with a fire alarm or fire suppression system, or with the maintenance of other protective systems or with guard supervision, is called
A. a Trouble Signal B. a Protective Signal C. a Supervisory Signal. D. a Suppression Signal