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CONSTRUCTION SUPERBOOK PT.1 - 201-
Questions with Answers
Auxilliary gutters shall not contain more than ____ current carrying conductors at any cross section. a. 36 b. 32 c. 30 d. 24 - Correct answer c. 30 The Code applies to the installation of ____. a. Electrical conductors and equipment within or on public and private buildings b. Outside conductors and equipment on the premises c. Optical fiber cable d. All these - Correct answer d. All these Installation of communications equipment under the exclusive control of communications utilities located outdoors or building spaces used exclusively for such installation ____ covered by the Code. a. are b. are sometimes c. are not d. might be - Correct answer c. are not A building or other structure serve shall be supplied by only one service drop EXCEPT for ____. a. multiple occupancy building b. fire pumps c. emergency electrical system d. all of these - Correct answer d. all of these Overhead conductors used in festoon lighting shall NOT be less than ____. a. 0.75 mm² b. 3.5 mm² c. 2.0 mm² d. 5.5 mm² - Correct answer b. 3.5 mm²
The authority having jurisdiction of enforcement of the Code has the responsibility ____. a. For making interpretations of the rules of the Code. b. For deciding upon the approval of equipment and materials c. For waving specific requirements in the Code and allowing alternate methods and material if safety is maintained d. All of these - Correct answer d. All of these The following are common splicing rules EXCEPT one. Which one is this? a. A splice must provide a path for the current to pass through b. A joint must be mechanically as strong as the wire itself c. All splices must be mechanically and electrically secured by means of a solder d. Wires of the same size should be spliced together in line - Correct answer d. Wires of the same size should be spliced together in line A single receptacle is a ____ contact device with no other contact device on the same yoke. a. dual b. single c. multiple d. live - Correct answer b. single A ____ system is where a premise wiring is derived from a transformer and has no direct electrical connection, including a solidly connected grounded circuit conductor, to supply conductors originating in another system. a. separately derived b. classified c. direct d. emergency - Correct answer a. separately derived The total components and subsystems that, in combination, convert solar to electrical energy is called a ____. a. solar b. voltaic c. separately derived source d. solar photovoltaic - Correct answer d. solar photovoltaic Utilization equipment is equipment that utilizes electricity for ____. a. chemicals
Where extensive metal in or on buildings may become energized and is subject to personal contact ____ will provided additional safety. a. bonding b. suitable ground detectors c. suitable arresters d. adequate bonding and grounding - Correct answer d. adequate bonding and grounding Below are the factors that affect the ampacity of an electrical conductor EXCEPT one. Which one is this? a. Insulation resistance b. length of the conductor c. conductor material d. cross-sectional area - Correct answer .a. Insulation resistance Where flexible tubing is used to encase the conductors, the tubing shall extend from the last insulating support to no less than ____ inside the non- metallic boxes. a. 8 mm b. 10 mm c. 5.5 mm d. 6.4 mm - Correct answer d. 6.4 mm The sum of the cross sectional area of all the conductors in a wireway must not exceed ____ percent of the cross sectional area of the wireway. a. 15 b. 20 c. 10 d. 25 - Correct answer b. 20
. For 25 to 50 A circuits, the minimum Insulation resistance is ____. a 100,000 ohms b. 250,000 ohms c. 50,000 ohms d. 25,000 ohms - Correct answer b. 250,000 ohms Flexible metal conduits must not be used in ____. a. wet locations b. hoistways
c. storage battery rooms d. all of these - Correct answer d. all of these Interior locations protected from weather but subject to moderate degrees of moisture such as some basements, some barns, some cold-storage warehouses and the like, the partially protected locations under canopies, marquees, roofed open porches, and the like, shall be considered to be ____ locations. a. damp b. wet c. hazardous d. dry - Correct answer a. damp Type MI cables shall be securely supported at intervals NOT exceeding ____. a. 1,800 mm b. 2,000 mm c. 1,500 mm d. 2,500 mm - Correct answer a. 1,800 mm The use of surface non-metal raceway is NOT permitted in all those mentioned below EXCEPT one. Which one is this? a. dry locations b. where subject to serve physical damage c. where the voltage is over 300V d. where concealed - Correct answer a. dry locations What is the lowest dielectric strength of transformer oil, which is acceptable to the PEC? a. 20,000 Volts b. 22,000 Volts c. 25,000 Volts d. 17,500 Volts - Correct answer c. 25,000 Volts Flat conductor cable (FCC) system shall NOT be used in the locations enumerated below EXCEPT One. Which one is this? a. locations where subject to corrosive vapors b. damp locations c. residential buildings d. outdoors - Correct answer b. damp locations
c. 75°C d. 90°C - Correct answer c. 75°C This is a single conductor or multi-conductor assembly provided with or without an overall covering, primarily used for services. a. Tray cable b. Clad cable c. Service entrance cable d. flat conductor cable - Correct answer c. Service entrance cable Transformers that contain liquid that will burn shall be installed only in approved vaults and shall also comply with the following conditions EXCEPT one. Which one is this? a. Ample ventilation shall be provided for the continuous removal of flammable gases b. Vent opening shall be lead to safe locations outside the building c. All vent ducts and openings shall be of sufficient areas to reliable explosion pressure within the vault d. There shall be a robust door between the vault and any non-hazardous location - Correct answer d. There shall be a robust door between the vault and any non-hazardous location An appliance which can easily be moved from one place to another in normal use. a. Fixed appliance b. Accessible appliance c. Stationary appliance d. Portable Appliance - Correct answer d. Portable Appliance What locations do NOT allow the installation of PVC rigid conduits? a. Hazardous locations b. Corrosive locations c. wet locations d. in concealed locations - Correct answer a. Hazardous locations Conductors shall be securely attached to the buildings using fasteners shall be spaced NOT more than ____. a. 760 mm b. 600 mm c. 880 mm
d. 900 mm - Correct answer d. 900 mm Concealed Knob and tube wiring conductors shall be rigidly supported on knobs not more than a certain minimum distance apart. What is this distance? a. 2,000 mm b. 1,500 mm c. 1,300 mm d. 2,500 mm - Correct answer c. 1,300 mm For a motor starter to be in sight of the controller motor, it must NOT be more than ____ meters away. a. 20 b. 15 c. 25 d. 10 - Correct answer b. 15 Electrical equipment shall have sufficient short circuit ____ rating to permit the circuit protection device to clear a fault without extensive damage to the electrical components of the circuit. a. withstand b. current c. overload d. all of these - Correct answer b. current The PEC requires that electrical work shall be installed in ____. a. Neat and workmanlike manner b. Under the supervision of a qualified person c. Completed before being inspected d. All of these - Correct answer a. Neat and workmanlike manner Electrical equipment that depends on the ____ principles for cooling of exposed surfaces shall be installed so that airflow over such surfaces is not prevented by walls or by adjacent installed equipment. a. peter b. natural circulation of air and convection c. artificial cooling and circulation d. air conditioning - Correct answer b. natural circulation of air and convection
The lighting outlets provided for illumination about electrical equipment over 600V shall be so arranged that person changing lamps or making repairs on the ____ will not be endangered by live parts or other equipment. a. lighting system b. electrical system c. electrical equipment d. panelboard - Correct answer a. lighting system No ____ shall be attached to any terminal or lead so as to reverse designated polarity. a. grounded conductor b. grounding conductor c. ungrounded conductor d. grounding connector - Correct answer a. grounded conductor Where the load is computed on a volt-amperes per square foot basis, the load shall be evenly proportioned among multi-outlet branch circuit within the ____. a. premises b. branch circuit c. panelboards d. dwelling unit - Correct answer c. panelboards Wiring methods installed behind panels that allow access, such as the space above a dropped ceiling, are required to be ____ according to their required articles. a. supported b. painted c. in a metal raceway d. all of these - Correct answer a. supported Direct buried conductors or cables shall be ____ providing those splices are made with approved methods and identified materials. a. Permitted to be spliced without a spliced box b. Spliced only in approved in an approved junction box c. Spliced only in a weatherproof splice box d. None of these - Correct answer a. Permitted to be spliced without a spliced box Circulation of warm and cold air in ____ must be prevented.
a. raceways b. boxes c. cabinets d. panels - Correct answer a. raceways Conductors in metal raceways and enclosures shall be so arranged as to avoid heating the surrounding metal by alternating current induction. To accomplish this, the ____conductor(s) shall be grouped together. a. phase b. neutral c. equipment grounding d. none of these - Correct answer c. equipment grounding Equipment and devices shall be permitted within ducts or plenum chambers used to transport environment air only if necessary for their direct action upon, or sensing, of the ____. a. contained air b. air quality c. air temperature d. none of these - Correct answer a. contained air The ____ rating of conductor is the maximum temperature at any location along its length that the conductor can withstand over a prolonged period of time, without serious degradation. a. ambient b. temperature c. maximum withstand d. short circuit - Correct answer b. temperature A cable tray is a unit or assembly of units or sections and associated fittings that forms a ____ structural system used to securely fasten or support cables and raceways. a. rigid b. flexible c. movable d. secure - Correct answer a. rigid When the conductor current increases, the direction of the induced voltage (CEMF) in the conductor is opposite to the direction of the conductor current and tries to prevent the current from ____.
d. 0 - Correct answer b. 2 Conductors and busbars on a switchboard, panelboard, or control board shall be so located to be free from ____ and shall be held firmly in place. a. obstructions b. physical damage c. a and b d. none of these - Correct answer b. physical damage Lighting fixtures shall be supported independently of the outlet box where the weight exceeds ____ pounds. a. 60 b. 50 c. 40 d. 30 - Correct answer b. 50 Exposed conductive parts of lighting fixtures shall be a. Grounded b. painted c. bonded d. a and b - Correct answer a. Grounded Switched lamp holders shall be of such construction that the switching mechanism interrupts the electrical connection to the ____. a. lamp holder b. center contact c. branch circuit d. all of these - Correct answer b. center contact Receptacles faceplate covers made of insulating material shall be non- combustible and not less than ____ inch in thickness. a. 0. b. 0. c. 0. d. 0.22 - Correct answer a. 0. The PEC permits lighting fixtures tap conductors to be a minimum of ____ inches long. a. 12 b. 13
c. 14 d. 18 - Correct answer d. 18 Branch circuit conductors to individual appliances shall not be sized ____ than the required by the appliance markings or instructions. a. larger b. smaller c. a and b d. None of these - Correct answer b. smaller Eddy currents can be reduced by dividing the core into many flat sections or laminations. Because the laminations have a ____ cross sectional area, the resistance offered to the eddy currents is greatly increased. a. round b. porous c. large d. small - Correct answer d. small A(n) ____ type of electric motor tends to run away if it is not always connected to its load. a. direct current series b. direct current shunt c. alternating current induction synchronous d. alternating current - Correct answer a. direct current series A(n) ____ motor has a wide speed range. a. alternating current b. direct current c. synchronous d. induction - Correct answer b. direct current If the two (supply) leads of a direct current series motor are reversed, the motor will ____. a. not run b. run backwards c. run the same as before d. become a generator - Correct answer c. run the same as before The rotating part of direct current motor or generator is called the ____. a. shaft
a. 6 b. 10 c. 15 d. 20 - Correct answer a. 6 The controller shall have a horsepower rating at the application voltage not ____ than the horsepower rating of the motor. a. lower b. higher c. equal to d. none of these - Correct answer b. higher The disconnecting means for air-conditioning and refrigeration equipment must be ____ from the airconditioning or refrigerating equipment. a. readily accessible b. within sight c. a or b d. a and b - Correct answer d. a and b When supplying a room air-conditioner, rated 120 volts, nominal, the length of the flexible supply cord shall not exceed ____ feet. a. 4 b. 6 c. 8 d. 10 - Correct answer d. 10 Each doorway leading into a vault from the building interior shall be provided with a tight fitting door having a minimum fire rating of ____ hours. a. 2 b. 4 c. 5 d. 3 - Correct answer d. 3 A capacitor operating at over 600 volts, nominal, shall be provided with means to reduce the residual voltage to 50 volts or less within ____ after disconnecting it from the sour e of supply. a. 15 seconds b. 45 seconds c. 1 minute d. 5 minutes - Correct answer d. 5 minutes
Sealing compound is employed with type MI cable terminal fittings in Class I locations for the purpose of ____. a. Preventing the passage of gas or vapour b. excluding moisture and other fluids c. limiting a possible explosion d. preventing the escape of powder - Correct answer b. excluding moisture and other fluids A seal fitting is required for each conduit run passing from a Class I, Division 2 location into an unclassified location located no more than ____ feet from the boundary. a. 3 b. 6 c. 10 d. 20 - Correct answer c. 10 The minimum thickness of sealing compound Class 1. Division 2 locations shall not be less than the trade size of the conduit or sealing Fitting and in no case less than ____ inches. a. 1/ b. 14 c. 3/ d. 5/8 - Correct answer d. 5/ Each general care area patient bed location shall be provided with ____ receptacles(s). a. one single or one duplex b. six single or three duplex c. two single or one duplex d. four single or two duplex - Correct answer d. four single or two duplex In location where flammable anesthetics are employed, the area shall be classified as Class I. Division I, which shall extend ____. a. upward to the structural ceiling b. upward to a level 8 feet above the floor c. upward to a level 5 feet above the floor d. 10 feet in all directions - Correct answer c. upward to a level 5 feet above the floor
Stage equipment like footlights, border lights and others shall be so arranged that no branch circuit supplying such equipment will carry a load exceeding ____. a. 20A b. 15A c. 30A d. 10A - Correct answer a. 20A The branch circuit conductors that supply one or more units of data processing systems shall have an ampacity NOT less than ____ percent of the total load connected load. a. 150 b. 100 c. 125 d. 200 - Correct answer c. 125
