1) You are an electrical contractor working on a construction site. As you inspect the wiring installations, you come across a particular method where the wires are visibly exposed without any protective covering. In the field of electrical installations, when the wires are left open or exposed without any protective covering, this method is commonly known as a) Exposed Wire Installation b) Open Wiring on Insulators c) Unprotected Wiring Technique d) Hazardous Wire Connection 2) As you inspect the wiring, you notice various components that are used to support and protect the insulated conductors running throughout the building. Which components are commonly used for the support and protection of insulated conductors? a) Cleats, knobs (split or solid), porcelain tubes, and mica tubing b) Plastic sheathing and rubber grommets c) Fiberglass insulation and metal conduits d) PVC pipes and steel brackets 3) You are an electrician working on a renovation project in an old house. As you inspect the electrical wiring, you come across a section where the wires are intentionally left exposed for easy access and maintenance. You notice that these visible wires are supported by specific components. What type of components are commonly used to support the visible wires? a) Split or solid knobs b) Cleats and porcelain tubes c) Rubber grommets and plastic sheathing d) Fiberglass insulation and metal conduits 4) You are an apprentice electrician assisting a senior electrician on a residential wiring project. As you work together, when would you typically use split knobs? a) When ensuring proper grounding b) When supporting larger gauge wires c) When supporting wires smaller than No. 8 d) When protecting against electrical surges 5) During a home renovation project, the electrician was tasked with rewiring a room. As they worked on installing the electrical system, they encountered a section where thicker than gauge 8 wires were required, which type of knob would be most appropriate to use? a) Cleats b) Solid knobs c) Split knobs d) Porcelain tubes 6) When fastening knobs in electrical installations, what is the recommended practice for using nails to secure them? a) Using nails without any additional components b) Using screws instead of nails for better stability c) Applying an adhesive between the nail head and the insulator d) Placing a leather washer between the nail head and the insulator 7) When installing an electrical wiring system using the exposed knob and tube wiring method, what is the recommended minimum distance that should be maintained between conductors? a) 4 cm (1 ½ inches) b) 6 cm (2 ½ inches) c) 8 cm (3 inches) d) 10 cm (4 inches) 8) You are an electrician tasked with installing an electrical wiring system using the exposed knob and tube wiring method in an old house. As you proceed with the installation, you carefully measure and ensure that the proper spacing is maintained between the knobs. What is the recommended spacing between the knobs during the installation? a) 20 cm (8 inches) b) 30 cm (1 foot) c) 40 cm (16 inches) d) 50 cm (20 inches) 9) Why are wires inserted in porcelain tubes or flexible mica tubing when they pass through wooden parts of a building, such as studs, rafters, or floor joists? a) To provide electrical insulation b) To facilitate easy removal of the wires c) To enhance the aesthetics of the wiring d) To prevent moisture damage to the wires 10) You are an electrician working on a commercial building construction project. As you plan and execute the electrical wiring, you come across multiple points where wires cross each other. To ensure proper safety measures, you take the necessary steps to provide additional protection to the wires. Why do you provide porcelain tubes and mica tubing when wires cross each other? a) To improve electrical conductivity between the wires b) To reduce friction and allow easier wire movement. c) To provide insulation and prevent wire damage. d) To enhance the aesthetics of the wire crossing 11) Which of the following safety reminders is NOT appropriate when installing knobs and tube wiring? a) Apply strong pressure on the gimlet when driving it to the word board and hammer it. b) Have your electrician’s knife sharpened enough in order not to nick the wire. c) Have the auger brace oiled regularly, especially the ratchet type. d) Use the right-sized screwdriver for the right size of screw. 12) What is the primary purpose of using Flexible Nonmetallic Conduit in electrical installations? a) To provide electrical insulation b) To improve the aesthetics of the wiring c) To enhance conductivity of electric conductors d) To serve as a mechanical protection for electric conductors 13) What are the main reasons for the widespread use of Flexible Nonmetallic Conduit in electrical wiring installations? a) It offers mechanical protection with a smooth interior and non-conducting fibrous material. b) It enhances the conductivity of electric conductors. c) It provides electrical insulation and fire resistance. d) It improves the aesthetics of electrical wiring. 14) What is the defining characteristic of Type LFNC-A conduit? a) It has a smooth inner core and cover bonded together. b) It has a corrugated inner core for enhanced flexibility. c) It has a metal reinforcement layer for added strength. d) It has a non-conductive fibrous material for insulation. 15) What is the key feature of Type LFNC-B conduit? a) It has a smooth outer surface for easy installation. b) It has integral reinforcement within the conduit wall. c) It has a corrugated inner surface for increased flexibility. d) It has a non-metallic construction for electrical insulation 16) What is the main characteristic of Type LFNC-C conduit? a) It has a smooth internal surface for easy wire pulling. b) It has integral reinforcement within the conduit wall. c) It has a non-metallic construction for electrical insulation. d) It has a corrugated internal and external surface without integral reinforcement within the conduit wall. 17) In which locations can liquid tight flexible nonmetallic conduit be used? a) Exposed locations only b) Concealed locations only c) Exposed and concealed locations d) Extreme cold environments only 18) In which scenarios should liquid tight flexible nonmetallic conduit NOT be used? a) Situations where physical damage is likely. b) Situations where the combined ambient and conductor temperature exceeds the approved limits. c) Situations where the conduit length exceeds 1,800 mm, except in cases permitted by Section d) All the above 19) How frequently should the conduit be securely fastened? a) At intervals not exceeding 300 mm b) At intervals not exceeding 600 mm c) At intervals not exceeding 900 mm d) At intervals not exceeding 1200 mm 20) Which of the following statements correctly describes the securing and supporting requirements for conduits? a) Securing and supporting the conduit is not necessary when it is fished. b) Securing and supporting the conduit is not necessary when it is installed in lengths not exceeding 1,800 mm from a fixture terminal connection for tap conductors to lighting fixtures. c) Securing and supporting the conduit is never required regardless of the installation conditions. d) Securing and supporting the conduit is always required, regardless of the installation conditions. 21) In which situation would horizontal runs of liquid-tight flexible nonmetallic conduit be permitted to be supported and fastened?  a) When supported by openings through framing members at intervals not exceeding 900 mm and securely fastened within 300 mm of termination points. b) When supported by rigid metallic conduit and securely fastened within 300 mm of termination points. c) When installed vertically and securely fastened at termination points. d) When installed in lengths exceeding 900 mm and securely fastened to any nearby structure. 22) As an electrician installing an electrical system, how can you effectively measure the required length of flexible nonmetallic conduit from the outdoor unit to the indoor unit? a) Using a measuring tape to measure the straight-line distance between the units. b) Estimating the length based on visual inspection. c) Practically tracing the path with the conduit and measuring its length using a measuring device. d) Utilizing a laser distance measuring tool to determine the exact distance. 23) While working on the electrical installation in a commercial building, you come across a type of conduit called Rigid Nonmetallic Conduit (RNC). What is one characteristic of RNC that distinguishes it from other types of conduits? a) It is metallic and threaded. b) It has smooth walled tubing. c) It is flexible and can be bent easily. d) It is made of metal and has threads for connections. 24) While working on the wiring installations in a chemical processing facility, you encounter Rigid Nonmetallic Conduit (RNC). What is one specific characteristic of RNC that makes it suitable for this type of environment? a) Conductivity for efficient electrical flow. b) Flexibility for bending and maneuvering. c) Threaded connections for easy installation. d) Resistance to moisture and chemical atmosphere. 25) You are an electrical contractor working on a construction project for a sports stadium. As part of the electrical installation, you need to select the appropriate conduit for wiring that will be exposed to potential impact and high temperatures. What is another specific characteristic of RNC that makes them suitable for this application? a) High heat conductivity. b) Resistance to impact and crushing. c) Flexibility for bending and maneuvering. d) Threaded connections for easy installation. 26) Which of the following options correctly identifies examples of rigid nonmetallic conduits? a) Steel conduit, aluminum conduit, and copper conduit. b) Asbestos cement conduit, polyvinyl chloride conduit, and high-density polyethylene conduit. c) Flexible metal conduit, liquid-tight flexible conduit, and electrical metallic tubing. d) Galvanized conduit, PVC-coated conduit, and fiberglass conduit 27) According to the Philippine Electrical Code, under which conditions is the use of rigid nonmetallic conduit allowed? a) Concealed in floors, walls, and ceilings. b) Used for high-voltage electrical systems. c) Exposed on the exterior surface of buildings. d) Buried underground for outdoor installations. 28) While reviewing the electrical plans for a construction project in the Philippines, you discover that the Philippine Electrical Code prohibits the use of rigid non-metallic conduit under specific conditions. In which type of area is the use of rigid non-metallic conduit prohibited according to the code? a) Residential buildings. b) Outdoor installations. c) Hazardous locations. d) Commercial establishments. 29) According to the Philippine Electrical Code, in which types of establishments is the use of rigid non-metallic conduit prohibited? a) Residential buildings. b) Outdoor installations. c) Theaters and similar locations. d) Commercial establishments. 30) You are an electrical contractor working on a construction project that involves the installation of non-metallic conduit. Which of the following is a requirement of the Philippine Electrical Code (PEC) regarding the trimming of non-metallic conduit? a) Edges or burrs of non-metallic conduit must be trimmed both on the inside and outside. b) Non-metallic conduit must be grounded using a metal bonding strap. c) Non-metallic conduit must be securely fastened to the walls. d) Non-metallic conduit must be painted for proper insulation. 31) As an electrician working on a residential construction project, you are responsible for the installation of joints in non-metallic conduit. Which of the following statements accurately describes a requirement of the Philippine Electrical Code (PEC) regarding the installation of non-metallic conduit joints? a) Joints should be tightly sealed using waterproof tape to prevent moisture ingress. b) Joints must be made with adhesive-lined heat shrink tubing for maximum insulation. c) Approved coupling and adapter should be used for making joints between non-metallic conduit components. d) Joints should be soldered together to ensure a strong and permanent connection. 32) While working on the electrical installation for a commercial building, you encounter a situation where the conduit needs to cross an obstacle and enter an electrical box. Which type of conduit bend would you use in this scenario? a) 90° bend b) Straight bend c) Offset bend. d) U-bend 33) What is the main intention behind the design of Electrical Metallic Tubing (EMT) for use in a wiring installation? a) To increase electrical conductivity for better power transmission. b) To minimize or eliminate fire hazard and electrical accidents. c) To enhance resistance against moisture and corrosion. d) To provide flexibility for easy routing and installation 34) In which type of work conditions can Electrical Metallic Tubing (EMT) be used, according to its similarity with rigid metal conduit? a) Neither exposed nor concealed work conditions b) Both exposed and concealed work conditions c) Only concealed work conditions d) Only exposed work conditions 35) What is the standard length of Electrical Metallic Tubing (EMT) and the range of diameters it is available in? a) Standard length of 5 ft (1.5m) and a diameter from 1 inch up to 4 inches (100mm). b) Standard length of 6 ft (1.8m) and a diameter from 2 inches up to 8 inches (200mm). c) Standard length of 8 ft (2.4m) and a diameter from ¾ inch up to 3 inches (75mm). d) Standard length of 10 ft (3m) and a diameter from ½ inch up to 6 inches (150mm). 36) Under what condition can Electrical Metallic Tubing (EMT) be used according to its susceptibility to water? a) Only if the conduit is submerged in water. b) Only if the conduit is completely waterproof. c) Only if the conduit is installed in dry locations. d) Only if measures are taken to prevent water from entering the conduit. 37) You are an electrician working on a commercial building project, responsible for the installation of electrical conduits. As part of the project, you need to connect two sections of Electrical Metallic Tubing (EMT) using coupling. What is the main purpose of an EMT coupling in an electrical installation? a) To join two sections of EMT conduit together. b) To provide grounding for the electrical system. c) To protect the EMT conduit from moisture and physical damage. d) To provide a secure connection between EMT and rigid metal conduits. 38) As an electrician responsible for installing electrical conduits, what is the primary purpose of using an EMT elbow to navigate the EMT conduit around a structural beam and reach the desired location for a light fixture? a) To provide a secure connection between EMT and rigid metal conduits. b) To facilitate changes in direction in the conduit path. c) To protect the EMT conduit from physical damage. d) To provide grounding for the electrical system. 39) In which situation are “Saddle Bends” commonly used in electrical installations using EMT conduits? a) When straight sections of EMT conduit need to be connected. b) When EMT conduits need to make turns without using elbows. c) When EMT conduits need to be secured to the walls. d) When EMT conduits need to be grounded. 40) Why do EMT connectors play a crucial role in electrical installations? a) They enable proper alignment and connection of EMT conduits. b) They ensure the aesthetic appearance of the conduit system. c) They facilitate easy disconnection of electrical wiring. d) They provide insulation for electrical current. 41) You are tasked with installing electrical conduits in an industrial facility where corrosive chemicals are used. Which of the following best describes the reason why EMT (Electrical Metallic Tubing) should not be used in environments with corrosive fumes and vapor? a) EMT has poor conductivity in the presence of corrosive substances. b) EMT is not resistant to electrical currents in corrosive environments. c) EMT is prone to physical damage when exposed to corrosive substances. d) EMT's enamel coating deteriorates when exposed to corrosive fumes and vapor. 42) You are planning an electrical installation in an outdoor area where Cinder fill will be used. Considering the provided information, what is the primary reason for avoiding the use of EMT (Electrical Metallic Tubing) on Cinder fill? a) EMT's enamel coating is ineffective on Cinder fill. b) Cinder fill is known to cause physical damage to EMT. c) EMT is prone to corrosion when installed on Cinder fill. d) EMT does not provide adequate protection against electrical currents in Cinder fill. 43) What is the primary purpose of a Rigid Metal Conduit in an electrical installation? a) To provide grounding for the electrical wiring. b) To facilitate easy installation of electrical devices. c) To enhance the conductivity of the electrical system. d) To protect the electrical wiring from physical damage. 44) Where is a rigid metal conduit typically installed for maximum protection? a) Inside wooden structures b) Suspended from ceilings. c) Exposed to open air environments. d) Buried in concrete walls, floors, and ceilings. 45) You are tasked with installing electrical wiring in a commercial building using a rigid metal conduit. Considering the given information, what is the significance of a rigid metal conduit having a smooth inside diameter? a) It enhances the electrical conductivity within the conduit. It b) It increases the overall strength and durability of the conduit. c) allows for easy pulling of electrical wires through the conduit. d) It reduces the risk of mechanical damage to the conduit during installation. 46) You are working on an electrical installation project that requires running a rigid metal conduit between two rooms that are 15 feet apart. Considering the given information, which conduit length would be most appropriate for this situation? a) 5 feet b) 8 feet c) 10 feet d) 12 feet 47) You are tasked with installing a Rigid Metal Conduit that needs to make a 90-degree bend, which tool would you use to achieve the desired bend? a) Bar Bender b) Conduit Bender c) Mandrel Bender d) Roll Bender 48) You are working on an electrical installation project in an outdoor area with wet conditions. Considering the given information, how would you ensure the proper sealing of the termination point for the rigid metal conduit? a) Thread the pipe at the termination point b) Wrap the termination point with electrical tape. c) Install a weatherproof junction box over the termination point. d) Apply a waterproof sealant around the conduit termination point. 49) What is the purpose of using dies and dies stock in the context of threading pipe ends? a) To cut the pipe to the desired length before threading b) To provide a secure grip on the pipe for threading operations c) To create a smooth and polished finish on the threaded pipe end d) To remove any burrs or imperfections from the pipe before threading 50) You have just cut a section of rigid metal conduit using a pipe cutter, and you notice that there are burrs on the cut end. How would you remove the burrs to ensure the smooth insertion of wires without damaging their insulation? a) Use a hickey to smooth out the burrs. b) Use a pipe wrench to scrape off the burrs. c) Remove the burrs with a reamer or round file. d) Bend the cut end with a conduit bender to remove the burrs.

recitation EIM 9

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