US Vermont DMV CDL Air Brakes Test 8

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

Prepared with up-to-date content

DMV Vermont — Cdl Air Brakes DMV — Vermont (USA, State Traffic Law) USA — Vermont State DMV & FMCSA (MUTCD) — USA

What is this test? for Vermont DMV Cdl Air Brakes permit/CDL, USA (MUTCD) — DMV — Vermont (USA, State Traffic Law) level, USA — Vermont.
Is this for you? For driver candidates in Vermont, USA — Cdl Air Brakes permit/CDL (16+, State DMV)
Section: DMV Vermont — Cdl Air Brakes · Education: High School & Adult (16+) · Part: DMV Vermont — Cdl Air Brakes · Country: USA · Region: USA — Vermont

The DMV written test is an important step measuring driver candidates' knowledge of traffic laws, first aid, and vehicle technology.

This test reinforces your theoretical knowledge and provides the fundamentals needed to pass the exam and become a safe driver.

By solving this test of 20 questions, you can both test your knowledge and identify the topics you need to improve.

Question 1

What powers air brakes?

A) springs only

B) electricity

C) hydraulic fluid

D) compressed air

Question 2

What is governor cut-in pressure?

A) 200 psi

B) 150 psi

C) about 100 psi (85-100 range)

D) 60 psi

Question 3

What is governor cut-out pressure?

A) 200 psi

B) 60 psi

C) about 125 psi (120-135 range)

D) 90 psi

Question 4

At what pressure does low-air warning activate?

A) 20 psi

B) 125 psi

C) at or before 60 psi (55-75 range)

D) 100 psi

Question 5

What are spring brakes?

A) no brakes

B) steering brakes

C) service brakes

D) emergency/parking brakes applying on air loss

Question 6

What is the dual air brake system?

A) steering only

B) no dual

C) single only

D) two separate systems for safety

Question 7

What must you do before driving after starting?

A) drive at 50 psi

B) build pressure 100-125 psi and test

C) mirrors only

D) no check

Question 8

What is brake lag in air brakes?

A) hydraulic only

B) delay between pedal and application

C) no lag

D) instant action

Question 9

What is the air loss limit (single vehicle)?

A) 1 psi per hour

B) 10 psi

C) no limit

D) no more than 3 psi per minute

Question 10

What is the air loss limit (combination)?

A) no limit

B) 3 psi per week

C) no more than 4 psi per minute

D) 10 psi

Question 11

How test air compressor?

A) build 85 to 100 psi within 45 seconds

B) visual only

C) honk test

D) no test

Question 12

How test the low-air warning?

A) fan brakes down, warning by 60 psi

B) ignore it

C) disconnect buzzer

D) drive fast

Question 13

How test spring brakes?

A) drive test

B) fan below 20-45 psi, parking knob pops

C) no test

D) ask mechanic

Question 14

What is a pre-trip air brake check order?

A) no order

B) governor, warning, spring, leak, service

C) any order

D) drive first

Question 15

What are slack adjusters?

A) mirror arms

B) fuel lines

C) steering parts

D) link pushrod to brake cam

Question 16

What is manual slack adjustment rule?

A) daily manual

B) never check

C) anyone adjusts

D) needs training; autos should not need it

Question 17

What is brake adjustment limit?

A) about 1 inch pushrod travel

B) no limit

C) half foot

D) 3 inches

Question 18

What are foundation brakes?

A) parking only

B) retarders

C) the wheel brake mechanisms

D) engine brakes

Question 19

What is an application pressure gauge?

A) speedometer

B) oil gauge

C) shows service brake air used

D) fuel gauge

Question 20

What are supply pressure gauges?

A) voltage

B) coolant

C) tire pressure

D) show tank air pressure

US Vermont DMV CDL Air Brakes Test 8

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