CDL Tank Vehicles (N) Endorsement Test
Outage and loading: practice questions
Our CDL Tank Vehicles bank has 12 questions on this topic. Here are 4 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
Why do different liquids need different amounts of outage?
- They come from different shippers
- They expand by different amounts
- They need different hose sizes
- They have different colors
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B. They expand by different amounts — Since different liquids expand by different amounts, they require different amounts of outage (CDL Manual 8.2.6)
Question 2
What is outage?
- The time a tank is out of service
- The amount pumped out at each delivery stop on a route
- Liquid that leaks out on the road
- Room left in the tank for the liquid to expand
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D. Room left in the tank for the liquid to expand — Leaving room for the expanding liquid is called outage (CDL Manual 8.2.6)
Question 3
Why must room be left in a tank of liquid?
- Air is needed for the brakes
- Liquids shrink as they warm
- Liquids expand as they warm
- The tank shell stretches when full
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C. Liquids expand as they warm — Liquids expand as they warm and you must leave room for the expanding liquid (CDL Manual 8.2.6)
Question 4
Which of these helps decide how much liquid to load?
- The color of the liquid
- How much the liquid will expand in transit
- The number of compartments in the tank
- How far the receiver is from the shipper's loading rack
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B. How much the liquid will expand in transit — The amount to load depends on expansion in transit, the weight of the liquid and legal weight limits (CDL Manual 8.2.7)