Low-Voltage Circuit Breaker - Assessment Test

Low-Voltage Circuit Breaker - Assessment Test

Test your current knowledge of Low-Voltage Circuit Breakers through this short assessment quiz.

After completion, feel free to share this quiz with your friends or co-workers and see who scores the highest.

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Arcing Contacts make ___________ and break ________.



Relay _________ should not be filed.



___________ plates in an arc chute require replacement.



When a circuit breaker is in the "test" position _______power is removed.



If the circuit breaker main contacts show _____________ the technician should check contact pressure.



A circuit breaker is  a/an________________ with overcurrent protection.



If it is impossible to hold the contacts closed manually against a tripped condition the breaker is ________.



The anti-pump circuit is designed to ____________.



When primary load current actually flows through a circuit breaker trip device, it is known as a __________ trip device.



If the main stabs are disconnected and the auxiliary stabs are connected the breaker is in the ____________.



When verifying the Long Time delay band using the manufacturer's time curve, the industry standard is to apply current that is _______ times the Long Time Delay pickup setting.



A thin layer of conductive lube must be applied to pivot points,main stabs,auxiliary stabs and ________________.



When a circuit breaker trips, which set of contacts opens first?



When verifying the Short Time delay band using the manufacturer's time curve, the industry standard is to apply current that is ___________times the Short Time Delay pickup setting.



To test the long time delay function of a breaker which is set for 1000 amps ___________ test current is needed.



The ampere rating of the trip device in a breaker is the __________________.



The main stabs on a breaker connect the _____________ to the bus.



The first step in circuit breaker operation should be to find and read the _______________________.



When determining the "continuous current rating" of a circuit breaker, the __________ is the limiting factor.



If the test current applied to the circuit breaker is 10 times the device setting the ________is being tested.