US North Carolina DMV CDL Air Brakes Test 7

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

Prepared with up-to-date content

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

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

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 is manual slack adjustment rule?

A) never check

B) daily manual

C) anyone adjusts

D) needs training; autos should not need it

Question 2

What is brake adjustment limit?

A) half foot

B) about 1 inch pushrod travel

C) no limit

D) 3 inches

Question 3

What are foundation brakes?

A) the wheel brake mechanisms

B) engine brakes

C) retarders

D) parking only

Question 4

What is an application pressure gauge?

A) speedometer

B) fuel gauge

C) shows service brake air used

D) oil gauge

Question 5

What are supply pressure gauges?

A) show tank air pressure

B) voltage

C) tire pressure

D) coolant

Question 6

What happens below 20-45 psi?

A) faster stop

B) Nothing happens

C) spring brakes fully apply

D) horn sounds

Question 7

How park with air brakes?

A) engine running

B) no brake needed

C) leave in neutral only

D) parking brake on, chock on grades

Question 8

What is fanning the brakes?

A) warming brakes

B) parking method

C) repeated apply-release (testing only)

D) driving technique

Question 9

What is stab braking (emergency)?

A) hard brake, release wheels, reapply

B) lock wheels

C) pump gently

D) use parking brake

Question 10

What is controlled braking?

A) lock all wheels

B) release fully

C) firm pressure without locking

D) alternate pedals

Question 11

How stop on slippery with ABS?

A) release all

B) firm steady, steer through

C) pump hard

D) lock wheels

Question 12

What is an alcohol evaporator for?

A) adds power

B) heats cab

C) reduces winter moisture freeze

D) cleans tanks

Question 13

How drain air tanks?

A) yearly

B) only summer

C) daily (manual) or auto valve check

D) never

Question 14

Why drain tanks?

A) weight

B) noise

C) water/oil harms braking

D) looks

Question 15

What is a dual air gauge reading?

A) primary and secondary tank pressures

B) fuel levels

C) oil twice

D) tire temps

Question 16

What if one system fails?

A) faster stop

B) no brakes at all

C) nothing changes

D) other system still brakes (stop safely)

Question 17

What are air lines colors?

A) both black

B) red emergency, blue service

C) green/yellow

D) no colors

Question 18

How connect glad hands?

A) any way

B) seals clean, locked, no leaks

C) loose ok

D) taped

Question 19

How test service brakes?

A) highway test

B) ask others

C) roll ~5 mph, brake firmly, check pull

D) no test

Question 20

What is stopping distance vs cars?

A) much longer for trucks

B) instant

C) shorter

D) same

US North Carolina DMV CDL Air Brakes Test 7

Test Complete

About This Test