101 Basic Series - Module 05 - 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 A circuit breaker that uses SF6 gas and is frequently used by European manufacturers employs the __________  method for arc extinguishing. Stretching Breaking Blowing out Enclosed contacts 2 In a thermal overload, temperature build-up occurs between the insulation and the conductor. True False 3 A trip unit is the circuit breaker's "intelligence", which trips the operating mechanism open in the event of an overcurrent condition. True False 4 The key to a circuit breaker's short circuit interrupting capability is its ability to extinguish an arc quickly. True False 5 Peak value sensing in an analog trip unit never causes false tripping and offers more accuracy than digital trip units. True False 6 Circuit breaker frames are usually constructed of bolted and welded metal or molded insulating material. True False 7 he current transformer of an electronic trip unit is used in each phase to monitor and __________ the current to the proper input level. Increase Decrease Keep the same 8 Digital trip units look at selected discrete points on a curve and make a summation of those points. This helps reduce false tripping. True False 9 The two steps in the two-step stored energy mechanism are charging the closing spring (storing the energy) and releasing energy to close the breaker. True False 10 A circuit breaker that is bolted in and hard wired to the frame is known to be _____________. Power must be turned off to remove and replace the breaker. Fixed Mounted Removable Drawout Bolt-on Plug-in 11 As a circuit breaker opens or closes, the moveable contact maintains its position, while the fixed contact makes or breaks the circuit. True False 12 The two types of trip units are _______________ and ____________. Current transformer, electromechanical Flux-transfer shunt, current transformer Electronic, flux-transfer shunt Electromechanical, electronic 13 A method for extinguishing arcs that moves the arc through an arc divider, splitting and cooling it is known as ____________. Stretching Breaking Blowing out Enclosed contacts 14 Circuit breakers are commonly used in loadcenters, panelboards, and switchboards. True False 15 Electromechanical trip units have increased accuracy, repeatability, and discrimination over electronic trip units. True False 16 Circuit breakers are only used in loadcenters, panelboards, and switchboards. They are never to mounted in separate enclosures. True False 17 Electromagnetic trip units are both temperature and harmonic insensitive. True False 18 Molded insulated frames are made from materials such as glass-polyester or thermoset composite resins. True False 19 Thermal magnetic trip units act to protect the circuit breaker itself. True False 20 The surge of amperage created during an electrical failing is called the __________. Fault current Ampere rating Voltage surge Interrupt rating

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