Preguntas CDL de Conocimientos Generales gratis

Preguntas de ejemplo de este examen

1. A single vehicle needs a CDL when its GVWR is at least:Un vehículo sencillo requiere CDL cuando su GVWR es de al menos:
   1. 10,001 lb
   2. 16,000 lb
   3. 26,001 lb
   4. 33,000 lb
   Ver respuesta

   26,001 lb

   Any single vehicle with a GVWR of 26,001 lb or more needs a CDL.

   Todo vehículo sencillo con GVWR de 26,001 lb o más requiere CDL.

2. In the basic vehicle control test, you will be asked to:En la prueba de control básico, se le pedirá:
   1. Drive on the freeway at top speed
   2. Inspect the engine
   3. Recite the hours-of-service rules
   4. Move the vehicle forward, backward and turn it within a marked area
   Ver respuesta

   Move the vehicle forward, backward and turn it within a marked area

   Basic control tests moving forward, backing and turning inside an area marked with lanes, cones or barriers.

   El control básico evalúa avanzar, retroceder y girar dentro de un área con carriles, conos o barreras.

3. If your license is suspended, revoked or canceled, you must tell your employer within:Si su licencia es suspendida, revocada o cancelada, debe avisar a su empleador dentro de:
   1. 1 hour
   2. 2 business days
   3. 10 days
   4. 30 days
   Ver respuesta

   2 business days

   Notify your employer within two business days of a suspension, revocation, cancellation or disqualification.

   Avise al empleador dentro de dos días hábiles de una suspensión, revocación, cancelación o descalificación.

4. Coolant and engine oil temperature gauges should:Los indicadores de temperatura de refrigerante y aceite deben:
   1. Read maximum right away
   2. Stay at zero
   3. Jump up and down
   4. Begin a gradual rise to the normal operating range
   Ver respuesta

   Begin a gradual rise to the normal operating range

   Temperatures should rise gradually to normal.

   Las temperaturas deben subir poco a poco a lo normal.

5. Why should you speed up smoothly and gradually?¿Por qué debe acelerar de forma suave y gradual?
   1. It keeps the brakes cool
   2. It makes the turn signals work
   3. Rough acceleration can cause mechanical damage, such as to the trailer coupling
   4. It is required only on downgrades
   Ver respuesta

   Rough acceleration can cause mechanical damage, such as to the trailer coupling

   Jerky starts can damage the vehicle; when pulling a trailer, rough acceleration can damage the coupling.

   Los arranques bruscos pueden dañar el vehículo; con remolque, pueden dañar el acoplamiento.

6. On a two-lane, two-way road, where do you place the warning devices?En una vía de dos carriles y doble sentido, ¿dónde coloca los dispositivos?
   1. All three behind the vehicle at 10, 100 and 200 feet
   2. Two in front and one behind at 50 feet
   3. Only one, 500 feet behind
   4. Within 10 feet of a corner, 100 feet behind, and 100 feet ahead
   Ver respuesta

   Within 10 feet of a corner, 100 feet behind, and 100 feet ahead

   On two-way or undivided roads, mark the corner and place one 100 feet behind and one 100 feet ahead.

   En vías de doble sentido o no divididas, marque la esquina y ponga uno 100 pies atrás y otro 100 pies adelante.

7. A sign on a downgrade shows “Maximum Safe Speed 35.” What should you do?Un letrero en una bajada dice “Maximum Safe Speed 35”. ¿Qué debe hacer?
   1. Never exceed 35 mph
   2. Go up to 10 mph over if the road is dry
   3. Ignore it if your load is light
   4. Treat it as the minimum speed
   Ver respuesta

   Never exceed 35 mph

   Never exceed a posted speed limit or Maximum Safe Speed sign.

   Nunca supere un límite indicado ni un letrero de velocidad máxima segura.

8. When driving through a work zone, how can you warn drivers behind you?Al pasar por una zona de trabajo, ¿cómo puede avisar a los conductores de atrás?
   1. Flash your high beams at them
   2. Sound your horn continuously
   3. Turn on your interior cab light
   4. Use your four-way flashers or brake lights
   Ver respuesta

   Use your four-way flashers or brake lights

   Drive slowly near work zones and use four-way flashers or brake lights to warn the drivers behind you.

   Maneje despacio en zonas de trabajo y use las intermitentes de emergencia o las luces de freno para avisar a los de atrás.

9. Which is part of a good plan to prevent distractions?¿Qué es parte de un buen plan para evitar distracciones?
   1. Assume nothing distracting will happen
   2. Start complex or emotional talks with passengers to stay awake
   3. Turn on all communication devices so you do not miss calls
   4. Expect distractions to occur and talk through possible situations before driving
   Ver respuesta

   Expect distractions to occur and talk through possible situations before driving

   Assess distractions, make a preventive plan, expect distractions, and discuss possible scenarios before you drive.

   Evalúe las distracciones, haga un plan, espere que ocurran y hable de posibles situaciones antes de manejar.

10. On long trips, about how often should you take a break?En viajes largos, ¿más o menos cada cuánto debe descansar?
    1. Every 50 miles or 30 minutes
    2. Every 100 miles or 2 hours
    3. Every 300 miles or 6 hours
    4. Only when you need fuel
    Ver respuesta

    Every 100 miles or 2 hours

    On long trips, stop for a break roughly every 2 hours or 100 miles.

    Descanse aproximadamente cada 100 millas o 2 horas en viajes largos.

11. Carbon monoxide from an exhaust leak will first make you:El monóxido de carbono de una fuga del escape primero le causa:
    1. Hungry
    2. Cold
    3. Sleepy
    4. More alert
    Ver respuesta

    Sleepy

    Carbon monoxide gas causes sleepiness, and in large enough amounts it can kill you.

    El monóxido de carbono da sueño y en cantidad suficiente puede matarlo.

12. When should you shift into a low gear for a long downgrade?¿Cuándo debe cambiar a una marcha baja para una bajada larga?
    1. Before you start down the grade
    2. Halfway down
    3. When the brakes start to smell
    4. At the bottom
    Ver respuesta

    Before you start down the grade

    Get into low gear before starting down. Once speed builds you may not be able to downshift at all.

    Meta la marcha baja antes de bajar. Cuando ya tomó velocidad quizá no pueda bajar de marcha.

13. In an ABS, what lowers brake pressure when a wheel is about to lock?En un ABS, ¿qué reduce la presión del freno cuando una rueda va a bloquearse?
    1. The electronic control unit (ECU)
    2. The driver's foot
    3. The slack adjuster
    4. The air compressor governor
    Ver respuesta

    The electronic control unit (ECU)

    Sensors detect possible lockup, and the ECU reduces brake pressure to prevent it.

    Los sensores detectan el posible bloqueo y la ECU reduce la presión para evitarlo.

14. When using an extinguisher, you should get as close to the fire as possible.Al usar un extintor, debe acercarse al fuego lo más posible.
    1. True
    2. False
    Ver respuesta

    False

    False. Stay as far away from the fire as possible, stand upwind, and let the wind carry the agent to the fire.

    Falso. Manténgase lo más lejos posible, con el viento a su espalda, y deje que el viento lleve el agente al fuego.

15. Which hazard class includes pesticides and arsenic?¿Qué clase incluye pesticidas y arsénico?
    1. Class 9
    2. Class 5
    3. Class 3
    4. Class 6 – Poisons
    Ver respuesta

    Class 6 – Poisons

    Class 6 is poisons, such as pesticides and arsenic.

    La Clase 6 son venenos, como pesticidas y arsénico.