Step 3 » GENERAL learning environment Category D (D, D1, Tb, Tv)

GENERAL Learning Environment Category D (D, D1, Tb, Tv)
Question 168 of 485

To obtain increased effectiveness, the electromagnetic retarder must be used:

A at the same time with the exhaust retarder;
B at the same time with the parking brake;
C independent of the service brake.

Explanation

Explanation text category D / driving license quizzes drpciv:
Buses and heavy trucks have, besides the wheel brake, other slowing devices. The exhaust brake (the engine brake) is a retarder that interrupts the diesel supply and obstructs the exhaust gases. The electromagnetic brake is a retarder that brakes the driveshaft (the transmission) with the help of an electromagnet.
Therefore to obtain increased effectiveness, the electromagnetic retarder must be used at the same time with the exhaust retarder.
Correct answer: A
 
Driving license quizzes drpciv category D explained.

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