Correct answer
To the driven wheels through the transmission.
To the driven wheels through the transmission. The hydraulic retarder creates resistance to rotation using oil between its rotor and stator. It helps control speed and reduces service-brake use; it does not work by cutting fuel injection and does not replace the service brake for every braking need. Use it according to manufacturer instructions and grip conditions.
Full explanation free, no sign-up.
Practice more D licence questions
A self-check with exam-style questions on Mechanics and maintenance. Free, no signup.
All options
Only to the non-driven wheels.
Only to the trailer wheels, without retarding the lorry.
To the driven wheels through the transmission.
The real exam in English is a translation of the Spanish original; compare both here.
Show the Spanish original
En un camión con ralentizador hidráulico conectado a la transmisión, ¿a qué ruedas se transmite su efecto de retención?
- Únicamente a las ruedas no motrices.
- Solo a las ruedas del remolque, sin transmitir retención al camión.
- A las ruedas motrices, a través de la transmisión.(Correct answer)
Editorial status: editorially approved. This status does not certify legal review. Report a correction
Keep studying
Related questions
- A bus has hydraulic power steering with a reservoir and level marks. Should the driver check its fluid?
- If an exhaust silencer is broken and no longer properly attenuates engine noise, what effect does this have?
- To move off and accelerate a loaded bus forwards, how must the tractive force at the wheels compare with the forces opposing forward movement?
- In a conventional drivetrain with a propeller shaft and crown wheel and pinion final drive, which mechanism provides a fixed reduction before the wheels in addition to the gearbox?
- In a vehicle whose cooling system has an expansion tank with level marks, where do you check the coolant level according to the manufacturer’s instructions?
- A 24 V starting system uses two identical compatible 12 V batteries. Which connection adds their nominal voltages?