101 Basic Series - Module 03 - Post Assessment Your final score on this exam will be emailed to you for your records. First name:   Last name:   Company name:   E-Mail Address   City   State   NO STATEALAKASAZARCACOCTDEDCFMFLGAGUHIIDILINIAKSKYLAMEMHMDMAMIMNMSMOMTNENVNHNJNMNYNCNDMPOHOKORPAPRPWRISCSDTNTXUTVTVIVAWAWVWIWY Province (Optional)   Country (Optional)   1 This electrical distribution system is used for commercial buildings and shopping centers where it is necessary to minimize interruptions. Radial System Loop System Network System 2 In a three-phase system, each phase is ________ degrees apart. 100 120 150 180 3 A one-line diagram can show a simple DC circuit, but it cannot show a complex 3-phase system. True False 4 The selectively coordinated system is the most costly of the three basic systems of coordination. True False 5 If the branch circuits supply motor loads, fully rated or selectively coordinated systems should not be used. True False 6 The illustration above shows which power system? Single-phase Three-phase Neither 7 A graphical representation of an electrical distribution system is called a ________. Single-phase diagram Three-phase diagram One-line diagram Schematic Diagram 8 The ________ distribution system is the most expensive, but provides the most reliable service in terms of continuity. Radial System Loop System Network System 9 Single-phase, three-wire has two hot wires and one neutral wire and can supply both 120V and 240V. True False 10 If equipment meets certain safety standards set forth by Underwriter's Laboratory, the equipment becomes _____________. NEC Certified ANSI Listed IS09000 Certified UL Listed 11 The type of system coordination in which all circuit breakers are rated to operate independently is ________. Series rated Fully rated Selectively coordinated None of the above 12 IEC stands for ________? Industrial Electromechanical Commission International Electricity Commission International Electrotechnical Commission Industrial Electrotechnical Corporation 13 Utility companies can use smaller cables for distribution because when voltage is increased, current is ___________. Increased Decreased Stays the Same 14 Which overcurrent condition usually has the smallest magnitude of current? Overload Short Circuit Ground Fault All of them have a small magnitude None of them have a small magnitude 15 Electric codes usually carry ______________ compliance, such as those from the NEC. Voluntary Suggested Mandatory Cautious 16 The ________ steps down the voltage to useful voltages to be delivered to homes and facilities that it supplies. Generating station Transmission substation Station Switchyard Subtransmission Station Distribution Substation 17 An electrical distribution system that has one power source for a group of customers is a ________ distribution system. A circuit failure in the system causes a power interruption for all in the system. Radial System Loop System Network System 18 A piece of equipment meeting one set of standards automatically meets other standards since they are all so similar. True False 19 ________ are the result of placing excessive loads on the circuit beyond the level the circuit was designed to handle safely. Overloads Short Circuits Ground Faults None of the above 20 The maximum short circuit current that an overcurrent protective device can safely interrupt is known as its interrupting rating. True False

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