CDL Tanker Endorsement Practice Test
Preguntas frecuentes
¿Cuántas preguntas de práctica de CDL Tanker Endorsement hay aquí?+
Un banco completo de preguntas originales de CDL Tanker Endorsement en las áreas oficiales, con el peso del examen real y explicaciones. Gratis, sin registro.
¿Cómo es el examen CDL Tanker Endorsement?+
Unas 60 preguntas. Practica por tema aquí y luego haz el simulacro cronometrado para medir tu preparación.
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Preguntas de práctica de ejemplo
Algunas preguntas reales de este banco gratuito, con explicaciones completas. Usa la herramienta de arriba para el banco completo.
- 1. Bulk Liquids & Surge
What is 'liquid surge' in a tank vehicle?
- a.The foaming of liquid caused by rough road surfaces
- b.The leakage of liquid past a faulty valve
- c.The wave action of liquid that moves back and forth when the vehicle changes speed
- d.The buildup of vapor pressure inside a sealed tank
Respuesta: c
Explicación: Liquid surge is the movement of liquid in partially filled tanks. When the driver brakes, the liquid surges forward and can push the truck ahead, then rock it backward. This wave action can strongly affect vehicle handling and control.
- 2. Bulk Liquids & Surge
How does a tank vehicle's high center of gravity affect driving?
- a.It lowers the risk of rollover
- b.It makes the vehicle more likely to roll over
- c.It has no effect on a loaded tank
- d.It improves braking on wet roads
Respuesta: b
Explicación: Tank vehicles have a high center of gravity, meaning much of the weight is carried high off the road. This makes the vehicle top-heavy and easy to roll over. Liquid surge combined with a high center of gravity makes tankers especially prone to tipping in curves and sudden maneuvers.
- 3. Bulk Liquids & Surge
Three factors determine how much liquid you can safely load into a tank. Which set is correct?
- a.Trailer length, hitch rating, and fuel level
- b.The amount the liquid will expand, the liquid's weight, and legal weight limits
- c.Road grade, tire pressure, and axle count
- d.Ambient temperature, engine size, and brake type
Respuesta: b
Explicación: You must consider how much the liquid will expand in transit, the weight of the liquid, and the legal weight limits. A dense liquid may reach the weight limit before the tank is full. Outage must be left for expansion regardless of how heavy the product is.
- 4. Bulk Liquids & Surge
On a smooth bore tanker, when is liquid surge typically the strongest?
- a.When the parking brake is set
- b.When starting and stopping, because nothing slows the forward-back movement
- c.When driving at a steady speed on a straight road
- d.Only when the tank is completely full
Respuesta: b
Explicación: Smooth bore tanks have no baffles, so the liquid surges freely forward and back when speed changes. Starting and stopping produce the strongest surge in these tanks. This is why smooth bore tanks demand smooth, gradual speed changes and extra following distance.
- 5. Inspection
When inspecting a tank vehicle, why is checking for leaks especially important?
- a.Because leaking cargo can be hazardous and signals a serious defect
- b.Because tank inspections are optional for food products
- c.Because tanks never need weight checks
- d.Because leaks are only a problem after unloading
Respuesta: a
Explicación: Tank vehicles have special inspection needs, and checking for leaks is one of the most important. A leak may indicate a defect that could be dangerous, especially with hazardous cargo. Any leaking tank should be taken out of service until repaired.
- 6. Inspection
When inspecting the piping, hoses, and connections on a tank, what are you looking for?
- a.The correct shade of paint
- b.Leaks, damage, and loose or missing fittings
- c.Whether they can be removed while driving
- d.The manufacturer's logo
Respuesta: b
Explicación: Piping, hoses, and connections must be checked for leaks, cracks, wear, and secure fittings. Loose or damaged connections can leak cargo during transport or unloading. All valves and caps should be properly closed and secured before the trip.
- 7. Inspection
Because a loaded tank places heavy stress on the suspension, what should you inspect?
- a.Springs, air bags, and other suspension components for damage or wear
- b.The windshield wipers only
- c.The company logo decals
- d.The cab's interior lights
Respuesta: a
Explicación: Heavy tank loads stress the suspension, so you should inspect springs, air suspension bags, hangers, and related parts. Cracked or worn suspension components can fail under load and cause loss of control. A thorough suspension check is especially important on heavy tank vehicles.
- 8. Driving Safely
What is the main reason tank vehicles roll over more easily than other trucks?
- a.Their extra-wide tires
- b.Their high center of gravity combined with liquid surge
- c.Their low ground clearance
- d.Their light overall weight
Respuesta: b
Explicación: Tank vehicles carry weight high off the ground and the liquid inside can surge and shift. This high center of gravity plus surging cargo makes them easy to tip in curves and sudden maneuvers. Driving slowly and smoothly is the best defense against rollover.
- 9. Driving Safely
Why is it dangerous to brake hard while going around a curve in a tanker?
- a.It uses too much fuel
- b.It is illegal in all states
- c.It makes the liquid freeze
- d.It can cause a skid or rollover due to combined forces on the top-heavy vehicle
Respuesta: d
Explicación: Hard braking in a curve combines braking force, cornering force, and liquid surge on an already top-heavy vehicle. This can cause the wheels to lock and skid or the vehicle to roll over. You should slow down before the curve and brake gently, if at all, while turning.
- 10. Driving Safely
How does liquid surge affect stopping a tank vehicle at a traffic light?
- a.It has no effect once the vehicle is stopped
- b.It can push the stopped vehicle forward into the intersection
- c.It makes the brakes work twice as fast
- d.It automatically holds the vehicle in place
Respuesta: b
Explicación: When you brake to a stop, the liquid surges forward and can shove the vehicle ahead, sometimes into the intersection. This is especially strong in smooth bore tanks. Leaving extra stopping distance and stopping a bit early helps you account for this forward push.