BNSF Session 4 Exam Questions And Answers (Verified And Updated)

BNSF Session 4 Exam Questions And Answers (Verified And Updated) If you have a track relay the two common resistance of the coil are ________ Ohms and _________ and are usually supplied with ________ volts? - answer2 Ohms, 4 Ohms, and 1- 2Volts If you have a line relay the two common resistances of the coil are ________ Ohms and ________ Ohms and are usually supplied with _________ volts? - answer500 Ohms, 1000 Ohms, and 10-14 Volts In CTC territory, a hand throw switch is not sufficient protection, what else do we need to install to prevent the hand throw switch from being operated until safe to do so. - answerElectric Switch Lock What does the letter "N" designate, regarding contact adjustment, on a circuit print of a switch circuit controller? - answerFront & Heal contacts made from full normal up to but not including 1/4 inch from full normal What portion of a GRS 9B electric switch lock must be extracted from the lock rod before the switch points can move? - answerPlunger To expedite train departure from the mainline BNSF installs a mainline _____________ circuit ahead of the switch point for an EWL. - answerRelease Before adjusting any power operated switch machine the points should be closed with moderate pressure to the stock rail, if the point is gapped where would this adjustment be made to correct this? - answerBasket On a POSM, nomenclature can vary but if there is a NWCR and RWCR what are these relays used to repeat? - answerThe switch position corresponds with the dispatcher's request On a POSM, nomenclature can vary but if the is a NWPR and RWPR what does the RWPR indicate. - answerThe switch is lined reverse When adjusting a power operated switch machine, always adjust the rods in the following order? - answerFar PD, Far Lock, Near PD, Near Lock The relay which requests the route for any train based on "first come first serve" is the? - answerApproach Track Relay The relay which requests and establishes the route? - answerRoute Relay and the Route Repeater Relay The relay which changes the signal aspect is the? - answerHome Relay The relay which prevents a signal clearing behind a train as it leaves the interlocker is the? - answerStick Relay A _____________ _____ _________ of 5 seconds or less shall not permit an established rout to be changed at an automatic interlocking - answerloss of shunt (FRA 236.309) ___________ locking prevents opposing signals from clearing once a train has a proceed signal in the route. - answerTraffic Locking (FRA 236.769) Approach or time locking shall be provided for all interlocker signals capable of displaying aspects more favorable than? - answerProceed at restricted speed (FRA 236.305) Nemonic for Interlocking: Owning Real Expensive Luxury Cars Lets People Realize UR Rich - answerOccupy the Track Request the Track Establish the Route Lock the Route Clear the Signal Light the Signal Pick the Stick Release the Route