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

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

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) compressed air

B) electricity

C) springs only

D) hydraulic fluid

Question 2

What is governor cut-in pressure?

A) 200 psi

B) 60 psi

C) 150 psi

D) about 100 psi (85-100 range)

Question 3

What is governor cut-out pressure?

A) 90 psi

B) 200 psi

C) 60 psi

D) about 125 psi (120-135 range)

Question 4

At what pressure does low-air warning activate?

A) 20 psi

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

C) 125 psi

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) two separate systems for safety

C) no dual

D) single only

Question 7

What must you do before driving after starting?

A) drive at 50 psi

B) build pressure 100-125 psi and test

C) no check

D) mirrors only

Question 8

What is brake lag in air brakes?

A) hydraulic only

B) no lag

C) instant action

D) delay between pedal and application

Question 9

What is the air loss limit (single vehicle)?

A) 10 psi

B) 1 psi per hour

C) no more than 3 psi per minute

D) no limit

Question 10

What is the air loss limit (combination)?

A) no limit

B) 10 psi

C) no more than 4 psi per minute

D) 3 psi per week

Question 11

How test air compressor?

A) visual only

B) honk test

C) build 85 to 100 psi within 45 seconds

D) no test

Question 12

How test the low-air warning?

A) ignore it

B) drive fast

C) disconnect buzzer

D) fan brakes down, warning by 60 psi

Question 13

How test spring brakes?

A) no test

B) drive test

C) ask mechanic

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

Question 14

What is a pre-trip air brake check order?

A) any order

B) governor, warning, spring, leak, service

C) drive first

D) no order

Question 15

What are slack adjusters?

A) fuel lines

B) link pushrod to brake cam

C) mirror arms

D) steering parts

Question 16

What is manual slack adjustment rule?

A) daily manual

B) never check

C) needs training; autos should not need it

D) anyone adjusts

Question 17

What is brake adjustment limit?

A) no limit

B) half foot

C) about 1 inch pushrod travel

D) 3 inches

Question 18

What are foundation brakes?

A) the wheel brake mechanisms

B) retarders

C) engine brakes

D) parking only

Question 19

What is an application pressure gauge?

A) speedometer

B) fuel gauge

C) shows service brake air used

D) oil gauge

Question 20

What are supply pressure gauges?

A) show tank air pressure

B) coolant

C) voltage

D) tire pressure

US Virginia DMV CDL Air Brakes Test 8

Test Complete

About This Test