What is a plenum - Study guides, Class notes & Summaries

What does A.W.G stand for? - American Wire Gauge What size conductors are permitted? - Size 18 A.W.G and 16 A.W.G are permitted, provided they do not exceed certain capacities. What is used to protect transformers or other devices supplied from power-supply conductors? - An over-current device not rated over 20 amperes. When located within 7 feet of the floor, how shall cables be fastened? - Cables shall be fastened in an approved manner at intervals of not more than 18 inches. Si...

Fire Alarm TFM 12 Exam Review What does PLFA stand for? - Power Limited Fire Alarm What does NPLFA stand for? - Non Power Limited Fire Alarm What material must NPLFA circuit conductors be made from - Only solid or stranded copper is permitted What is a single station detector? - Battery powered smoke detectors that do not communicate off premises. What is a multiple station detector? - Mains powered smoke detectors with battery backup that are linked together, so that if one un...

41 CFR 102-35.30 correct answers Disposition procedures must follow Federal Requirements as stated by Prior to personal property permanently leaving CG's control correct answers Agency-affixed markings should be removed when? Property Custodian (PC) correct answers Who is responsible for initiating the report of abandonment/destruction of personal property, Form CG-5598? 30 days total PC-6 APO-5 Hazmat-2 Security-2 CO/OIC-5 Regional manager-5 Final Approval-5 correct answers Rec...

NFPA 72 Questions and Answers with Certified Solutions What does PFLA stand for? Power Limited Fire Alarm. What does NPFLA stand for? Non-Power Limited Fire Alarm. What material must NPFLA circuit conductors be made from? Only solid or stranded copper is permitted. What is a single station detector? Battery powered smoke detectors that do not communicate off premises. What is a multiple station detector? Mains powered smoke detectors with battery backup that are linked toget...

VDV Study Guide v1.0 Questions and Answers (100%Guaranteed Pass) Latest Update. When you are sound masking, what is white noise used for? To produce ambient noise dB is a ratio of 2 quantities In antenna television system, what is a permitted substitution for CATVP cable? BLP Which type of cable is permitted substitution for OFNP? NONE What is the cable marking for Class 3 plenum? CL3P Dynamic Range means? Between the loudest & quietest portion of a program in decibels VDV Study Gui...

VDV Study Guide v1.0 Questions and Answers (100%Guaranteed Pass) Latest Update. When you are sound masking, what is white noise used for? To produce ambient noise dB is a ratio of 2 quantities In antenna television system, what is a permitted substitution for CATVP cable? BLP Which type of cable is permitted substitution for OFNP? NONE What is the cable marking for Class 3 plenum? CL3P Dynamic Range means? Between the loudest & quietest portion of a program in decibels VDV Study Gui...

B A third 90-degree bend may be permitted in a conduit run if the run does NOT exceed ______? A 5 m (16.5') B 10 m (33') C 15 m (50') D 30 m (100') C Which of the following is a property of an electromagnetic field built around a conductor that opposes any changes in current flow in a circuit? A Impedance B Capacitance C Inductance D Resistance A Which of the following markings is used for non-conductive optical fiber general-purpose cables? A OFNG B OFCR C OF...

b (heat exchanger) - Answer In a modern gas furnace, the component that separates the combustion gases from the supply air is the ______. a. gas valve b. heat exchanger c. inducer fan d. plenum box a (Gravity) - Answer What type of furnace moves warm air through the conditioned space without a fan? a. Gravity b. Horizontal c. Lowboy d. Upflow d (steel) - Answer Furnace heat exchangers generally are made of ______. a. ceramic b. copper c. plastic d. steel b (Annual Fuel...

BOMA-Instrumentation & Controls Questions and Answers Graded A+ A submaster controller resets the set point of the master controller. False Normally open refers to a controlled device that opens when no operating force is applied. True A P.E. Switch is used to change an electrical signal to a pneumatic output. False Moisture and dirt are detrimental to the operation of pneumatic control systems. True A static pressure regulator senses the pressure in the plenum the regulator contro...

1. When repairing a refrigeration system, a swaging tool set would be used to carry out which of the following operations? Ans: Swaging tools can be used to expand an end of one tube to fit onto a tube of the same original outside diameter. 2. In a refrigeration system that is not protected by a water failure switch, if the cooling water to the condenser fails, what will be the result for protective purposes? Ans: the compressor will shut down by the action of the high-pressure cutout s...