Crist CDL free online BVM practice tests
NV Dobles - Triples Fact Sheet
Questions on Test:
20
Correct answers needed to pass:
16
Passing Score:
80%
Age to apply:
18
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debe comprobar la altura del remolque antes de conectar un convertidor Dolly a un segundo o tercer remolque. La altura del remolque es correcta cuando:

Possible Answers:

el remolque se levantara ligeramente cuando el convertidor Dolly esta respaldado por debajo de el.
el centro del Kingpin se EnLinea con las mandibulas de bloqueo
el Kingpin descansa sobre la quinta rueda
Answer:
el remolque se levantara ligeramente cuando el convertidor Dolly esta respaldado por debajo de el.
Explanation:
úrese de que la altura del remolque sea correcta. Debe ser ligeramente inferior al centro de la quinta rueda, por lo que el remolque se eleva ligeramente cuando se empuja Dolly debajo.

Califica esta prueba:
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  1. You should check the height of the trailer before connecting a converter dolly to a second or third trailer. The trailer height is right when:
  2. The best way to stop all skids is to:
  3. When does the drivers manual advise disconnecting the steering axle brakes to help keep the rig straight?
  4. When driving with more than one trailer, which trailer should be the first one behind the tractor?
  5. Driving a truck with double or triple trailers requires a driver to:
  6. Which of these will result in the best control on curves?
  7. You are driving a 100' vehicle with double trailers at 30 MPH. The road is dry, and visibility is good. You should keep at least _____ seconds of space ahead of you:
  8. You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
  9. You are doing a walk around inspection of a double or triple trailer rig. You should be sure the converter dolly air tank drain valves are _____ and the pintle hook is _____.
  10. A converter dolly is
  11. If a converter dolly has spring brakes, you release the brakes by
  12. You have connected the converter dolly to the front semitrailer and then connected the rear semitrailer to the converter dolly. How should you test the coupling?
  13. To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and
  14. If your landing gear is power operated, you should check for ________ during your walk-around inspection.
  15. Coupling a triple trailer is different from coupling other combinations because
  16. The tractor protection valve is designed to close automatically when the air pressure falls into the pressure range specified by the manufacturer, typically
  17. In order, the four steps to test your trailer's service brakes are as follows
  18. If your test of the tractor protection valve is successful,
  19. To uncouple the rear trailer, the first thing you do is
  20. A converter dolly with antilock brakes (ABS) is required to have