101 Basic Series - Module 06 - 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 Which enclosure assembly method does not necessarily separate compartments within the switchgear by metal barriers, and is common among low voltage equipment? Metal-clad assembly Metal-enclosed assembly Metal barrier assembly None of the above 2 Short Circuit Current in the ANSI ratings chart is equivalent to the __________  in the IEC ratings chart. Short circuit current Normal current Voltage class Maximum voltage 3 Microprocessor-based trip intelligence is superior to electromagnetic-based trip intelligence because it provides all the features of several electromagnetic relays in one box. True False 4 The insulating medium between two contacts, (such as air, gas, or ceramic) is called ____________. Dielectric Arc chute` Bielectric Arc saturator 5 IEC stands for: __________ . Industrial Electromechanical Commission International Electricity Commission International Electro-Technical Commission 6 The spiral-shaped, copper-chrome contacts that provide a self-induced magnetic effect is a very inefficient arc control method. True False 7 The rotary arc technology is not effective over as wide a range of short circuit currents and voltages as the puffer technology. True False 8 A medium voltage power circuit breaker must meet the requirements of __________ , __________ ,__________ , __________ , and __________ to be considered "world-class". ANSI, UL, IEEE, NEMA, GB ANSI, UL, IEC, NEMA, GB ANSI, IEC, IEEE, NEMA, GB IEEE, IEC, UL, NEMA, GB 9 One drawback of the medium voltage power circuit breaker is that the closing strings cannot be charged manually. True False 10 The amount of current the breaker can carry continuously at 60 cycles without exceeding the temperature rise limit, according to ANSI charts, is called ___________. Continuous current Normal current Short circuit current Maximum current 11 If the dielectric in a vacuum interrupter does not reach sufficient strength fast enough, the arc will re-ignite. True False 12 The most common type of microprocessor-based trip intelligence used with a medium voltage power circuit breaker, which functions to detect a defective line or apparatus and dangerous or undesirable system conditions is called a ___________. Arc extinguisher Protective relay Vacuum interrupter None of the above 13 Which enclosure assembly method separates compartments within the switchgear by metal barriers? Metal-clad assembly Metal-enclosed assembly Metal barrier assembly None of the above 14 Continuous Current in the ANSI ratings chart is equivalent to the __________ in the IEC ratings chart. Normal current Voltage class Maximum voltage Short circuit current 15 A medium voltage power circuit breaker uses a stored-energy operating mechanism, which uses motor driven hydraulics, to open the circuit breaker. True False 16 A type of medium voltage power circuit breaker no longer in common use in switchgear is the Magnetic Air Type circuit breaker. True False 17 Which is not a position of a drawout mounted medium voltage power circuit breaker? Connect Disconnect Test Inspection 18 Vacuum interrupters for circuit breaker duty must be capable of interrupting currents of 16 to 75 kA at voltages up to 38 kV. True False 19 The puffer extinguishing method is far less complicated than the rotary arc method. True False 20 The highest voltage at which the breaker can operate, according to IEC charts, is the __________. Normal voltage Voltage class Maximum voltage Continuous voltage

Created and managed with SmartLite WebQuiz XP