101 Basic Series - Module 07 - CEU Education 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 A Truck Operated Cell Switch (TOC) provides which of the following? A remote means of tripping the breaker A remote means of closing the breaker Prevents unauthorized circuit breaker operation Indicates the movement of the breaker into and out of the "Connected" position 2 An operations counter counts the open and close operations of a low voltage power circuit breaker. True False 3 Current transformers used in low voltage power circuit breakers, to monitor and reduce the current to useful levels, are also known as _______________. Trip unit Arc extinguisher Primary contacts Current sensors 4 A component of the Arc Extinguisher in a low voltage power circuit breaker, which elongates and cools the arc, is called an arc chute. True False 5 All low voltage power breakers that meet applicable ANSI standards are capable of continuous operation at 100% of their current rating. True False 6 The frame rating or frame size of a low voltage power circuit breaker refers to the _________________ rating of the breaker. Continuous current Short time Interrupting None of the above 7 The position in which the low voltage power circuit breaker is fully connected and functional is the __________________. Connected position Test position Disconnected position Withdrawn position 8 A low voltage power circuit breaker's source of intelligence is its _______________. Trip unit Arc extinguisher Primary contacts Operating mechanism None of the above 9 The nominal voltage range for low voltage power circuit breakers in the domestic market governed by ANSI standards is ______ to 600 Volts AC. 120 208 240 480 1000 10 The operating mechanism springs of both manually operated and electrically operated low voltage power circuit breakers can be charged manually. True False 11 ANSI standards require low voltage power circuit breakers to have integrally mounted trip units. True False 12 A ______   ______ is an electromechanical device used to provide for remote controlled tripping of a manually operated low voltage power circuit breaker. Spring Release Undervoltage Release Bell Alarm Shunt Trip 13 When a low voltage power circuit breaker opens, its arcing contacts part before the main contacts part in order to draw any arcs formed away from the main contacts. True False 14 In the __________________, the low voltage power circuit breaker has no electrical connections, and is far enough out of its enclosure to permit inspection and maintenance. Connected position Test position Disconnected position Withdrawn position 15 Which testing standard most influences the design and testing of low voltage power circuit breakers used in the United States? NEMA 80 - A02 UL 1866 IEC 947-2 ANSI C37.50 16 Of the two most common low voltage power circuit breaker mounting methods, the fixed configuration is most commonly used because it is less expensive. True False 17 The ____________ rating of a power breaker is one of the main features that differentiates it from other types of circuit breakers. Continuous current Short time Interrupting Withstand None of the above 18 Primary connectors between a low voltage power circuit breaker and a bus are called ______________. Bus plugs Finger clusters Contact switches Bus adapters None of the above 19 A three-phase low voltage power circuit breaker would have two sets of primary contacts. True False 20 A typical microprocessor-based trip unit used with a low voltage power circuit breaker can offer the following capabilities, except: Programming Monitoring Diagnostics Communication All are offered

Created and managed with SmartLite WebQuiz XP