Question 1 a. b. c. d. What is the purpose of a fire detector? What are the two main types of fire detectors? What are the advantages of using a smoke detector? How do heat detectors detect fires? Question 2 What is the difference between an ionization smoke detector and a photoelectric smoke detector? Question 3 a. What is the difference between a fixed-temperature heat detector and a rateof-rise heat detector? b. What are the disadvantages of using a flame detector? Question 4 a. How are fire detectors connected to a fire alarm system? b. What is the role of the control panel in a fire alarm system? Question 6 a. What is the difference between a conventional fire alarm system and an addressable fire alarm system? b. What are the advantages of using an addressable fire alarm system? Question 7 a. What are the components of a typical fire alarm system? 1marks b. What is the difference between an audible and visual fire alarm signal? 1marks c. What are the different types of fire alarm devices? 1marks Question 8 a. What is the difference between a fire detector and a heat detector? b. What is the difference between a fire alarm system and a sprinkler system? Question 9 a. What are the disadvantages of using a conventional fire alarm system? b. What is the difference between a fire alarm system and a fire suppression system? c. What are the most common causes of fires in commercial buildings? 1 Question 11 a. How do you properly use a fire extinguisher? b. What is the PASS technique for using a fire extinguisher? c. What are the limitations of fire extinguishers? Questin 12 Answer yes or no and explain Is it prohibited to install fire detectors in hazardous environments such as chemical storage facilities? Are there any areas in a building where fire detectors should not be installed? Can fire detectors be installed in areas with high humidity or moisture? Are there any restrictions on installing fire detectors near kitchen areas? Can fire detectors be installed in areas with excessive dust or debris? Are there any restrictions on installing fire detectors in areas with high ceilings? Can fire detectors be installed in areas with extreme temperatures, such as industrial ovens or freezers? Is it prohibited to install fire detectors in areas with high air velocity, such as near HVAC vents? Are there any restrictions on installing fire detectors near fireplaces or wood stoves? Question 13 a. What type of cable should be used to connect a smoke detector to the power source? b. Why is it important to mount a smoke detector on the ceiling or high on the wall? Question 14 a. What is a fire alarm control panel? b. What are the main components of a fire alarm control panel? c. What is the purpose of the power supply in a fire alarm control panel? 2 d. What is the function of the CPU (central processing unit) in a fire alarm control panel? Question 15 a. What is the role of the relays in a fire alarm control panel? b. What is the function of the batteries in a fire alarm control panel? c. What is the significance of the printer in a fire alarm control panel? Question 16 a. What is cable trunking? b. What is cable conduit? c. What is the purpose of cable trunking or conduit in fire alarm installation? d. What are the factors to consider when selecting cable trunking or conduit for fire alarm installation? Question 17 a. What are the advantages of using cable trunking or conduit in fire alarm installation? b. What are the disadvantages of using cable trunking or conduit in fire alarm installation? c. What are the basic components of a fire alarm system? section B question 18. Demonstrate the function of the following items used in fire detector installation i. Manual call point 2MARKS ii. Power supply 2MARKS iii. Mimic panel 2MARKS iv. Smoke detector 2MARKS v. fire extinguisher 2MARKS question 19 3 enumerate a written description of a possible fire alarm system design and fire protection equipment that could be used in a building with 10 floors, each with 50 rooms. Question 20 Analyse the circuit below ,show all name and its function to the letter labelled on below fig 1 G H A B C Hea t D J F Question 21 Q12. Suppose that you are the fire alarm technician. If the following list of fire detector and alarm system devices is given to you, a. classify them as initiating devices and notification appliances.(7 marks) 4 a. Infrared detectors b. Bells c. Manually operated pull stations d. ionization smoke detectors e. Strobe lights f. sprinkler water flow sensors g. Horns h. Fixed temperature heat detectors i. chimes j. Photoelectric smoke detectors B) In the figure below, examine the impact for removing any detector is in this circuit ? (4 marks) Question 22 With the help of table, summarize the types/classes of fire 10MARKS Section C Question 23 • Class ‘A’ Circuit: is Arrangement of supervised initiating, notification, or signaling 5 • • devices on a circuit so that a single open or ground will initiate a trouble event. The open or ground fault will not prevent the circuit from operating. A wire (+)‐to‐wire(‐) short or a device activation initiates an alarm event. A class ”B” circuit :is Arrangement of supervised initiating, notification, or signaling devices on a circuit so that a single open or ground will initiate a trouble event. The open or ground fault may prevent the circuit from operating. A wire‐to‐wire short or a device activation initiates an alarm event Fig 2 Fig 3 S S P S P S P 6 S P P S S P S P S P S P P All powered All functioning i. ii. iii. demonstrate circuit type A and circuit type B after identifier it on fig 1,2,and 3 demonstrate the importance of EOLR in the circuit make a comparison between circuit type A nd circuit type B using a table ,generate five points at each case question 24 We’ve many defined a customer segment in our company , people with ear disability living with others individual with no disability , so we want to design a system of fire alarm by making sure that all parties relying on the fire alarm are able to use and maintain it. Design at least two fire alarm system for people with the ear disability. Prioritize these solutions and provide three factors on your prioritization 7
