| What are the main functions of underground track (rail) haulage? |
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| What factors influence the decision of rail supply haulage vs rubber tired vehicles |
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| Why are DC motors preferred over AC motors for rail haulage? |
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| Hydraulic brakes are effective on ________ grades |
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| With dynamic brakes on an electric locomotive, the __________ actuates the braking |
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| With dynamic brakes on a diesel locomotive, the locomotive is retarded or slowed through the __________ |
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| Hydraulic brakes are effective on _______ locomotives |
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| Shoe brakes are mechanically actuated on locomotives smaller that ____________t |
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| __________ brake systems should be considered for locomotives larger that 13.6tons |
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| Shoe brakes provide the opportunity to add other ____ powered equipment |
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| What are three main considerations governing the choice of a diesel locomotive |
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| The most common type of traction battery is made of _______ |
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| Traction batteries are rated to operate for __ hours |
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| Traction batteries take approximately __ hours to completely charge |
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| The overall traction battery locomotive efficiency is usually ______% |
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| As a rule of thumb, the required weight of rails to handle a locomotive is _____ lb per yard per ton of locomotive |
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| If a mine track provides a radius of curvature of _____ft, there is no problem |
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| If the radius of curvature is between 35 and ____ ft, it should be checked with the manufacturer |
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| On every level where mechanical track haulage is employed, a minimum clearange of at least ____cm should be maintained between the sides of the haulage-way and the cars or locomoti |
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| If the minimum clearances cant be met, there must be safety stations at every __m |
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| The continuing standard for locomotive brakes is |
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| For electric locomotives, ____ braking is arranged such that the controller activates it |
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| On lighter locomotives with minimum grades, ___ brakes can be used |
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Periodic Table
Planets from the Sun
Digits of Pi
