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Stopping the Big Rigs - Quiz 3

1.

According to the FMVSS-121 law the secondary tank:

  1. Must be isolated from the supply tank

  2. Must be color-coded

  3. Must have a specific volume capacity

  4. All of the above

  5. Both A & C

2.

One-way check valves:

  1. Allow air flow in one direction

  2. Protect the secondary tank from a failure in the supply tank

  3. Are required by FMVSS-121 law

  4. he air system requirements

  5. All of the above

3.

Manual Drain Valves

  1. Are required by FMVSS-121 law

  2. Permit release of condensation from the tank

  3. Permit release of condensation from the tank, in order to protect the air system requirements

  4. All of the above

4.

How does the driver know how much air pressure is in the secondary reservoir?

  1. A low air warning switch

  2. A manual drain valve

  3. A pressure gauge

  4. None of the above

5.

What's the purpose of the dual foot control valve?

  1. For back-up control

  2. To separate the secondary and primary circuits

  3. To modulate the front service brakes

  4. Both B & C

6.

A two-way check valve:

  1. Is like a tee with a check ball

  2. Is the same as a one way check valve

  3. Seeks out dominant air pressures

  4. All of the above

  5. Both A & C

7.

What's the function of a quick release valve?

  1. Speeds up application time

  2. Slows down the front brakes

  3. Speeds up the release of the front brakes

8.

The brake adjuster:

  1. Speeds up the release of the front brakes

  2. Changes linear force into rotary torque

  3. Provides a means of adjusting the brakes

  4. Both B & C

9.

A quick release valve is

  1. Like a pipe tee with exhaust port

  2. May have hold-off capabilities

  3. Is not used in the service brake system

  4. Both A & B

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