Cables in a fire alarm system must be supported by _____.
a. NFPA-brand cable ties
b. winged expansion anchors
c. the building structure
d. red electrical boxes
c. the building structure
You might also like to view...
Which of the following is a basic type of three-phase motors?
a. The squirrel-cage induction motor b. The split phase motor c. The asynchronous motor d. The servomotor
?In SAW, the heat is produced from ____.
A. ?a chemical reaction in the flux B. ?an arc between the work and a metal electrode C. ?heat applied to granular flux material D. ?the atmosphere reacting with the flux
When Andrews Electronics decided to compete in the market for video camcorders and
videocassette recorders, which component of the company's strategy did this decision reflect?
a. Scope b. Resource deployment c. Distinctive competence d. Synergy e. Entropy
How do evaporators in medium-temperature refrigeration cases normally defrost?
A) The case air circulates over the coil while the compressor is off. B) Electric heaters built into the evaporator coil C) Hot gas is bypassed around the condenser straight into the evaporator. D) Small defrost gas burners