FRA Locomotive Engine Systems 3

Question 1

Which FRA regulation governs locomotive inspection and maintenance requirements?

Accepted Answer

49 CFR Part 229

Answer

49 CFR Part 229 (Railroad Locomotive Safety Standards) establishes the federal requirements for locomotive inspection, testing, and maintenance.

Question 2

What is the maximum allowable time a locomotive may operate with a defective automatic train stop system under FRA rules before being removed from service?

Accepted Answer

It must be removed immediately

Answer

Under 49 CFR Part 236, a locomotive with an inoperative automatic train stop or train control system must be removed from service immediately or operated under special restrictions.

Question 3

What type of engine is used in most modern North American freight locomotives?

Accepted Answer

Two-stroke diesel engine driving AC traction motors

Answer

Modern North American freight locomotives (e.g., GE ES44 and EMD SD70) use two-stroke or four-stroke diesel engines paired with AC traction motors for improved adhesion and control.

Question 4

What does the term 'notch 8' refer to on a locomotive throttle?

Accepted Answer

The maximum power position of the throttle controller

Answer

North American locomotives use an 8-notch throttle system where notch 8 commands maximum engine horsepower output.

Question 5

A locomotive engine coolant temperature rises above the high-temperature limit. Which automatic protective action typically occurs?

Accepted Answer

Engine power is reduced or the engine shuts down automatically

Answer

Most modern locomotives have engine protection circuits that automatically reduce power or shut down the engine when coolant temperature exceeds safe limits to prevent catastrophic damage.

(FRA) Federal Railroad Administration Certification Practice Test

(FRA) Federal Railroad Administration Certification Practice Test

FRA Locomotive Engine Systems 3