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

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

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) compressed air

C) electricity

D) hydraulic fluid

Question 2

What is governor cut-in pressure?

A) 60 psi

B) 150 psi

C) about 100 psi (85-100 range)

D) 200 psi

Question 3

What is governor cut-out pressure?

A) 60 psi

B) 90 psi

C) 200 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) single only

D) no dual

Question 7

What must you do before driving after starting?

A) mirrors only

B) build pressure 100-125 psi and test

C) drive at 50 psi

D) no check

Question 8

What is brake lag in air brakes?

A) hydraulic only

B) instant action

C) delay between pedal and application

D) no lag

Question 9

What is the air loss limit (single vehicle)?

A) no more than 3 psi per minute

B) no limit

C) 10 psi

D) 1 psi per hour

Question 10

What is the air loss limit (combination)?

A) no limit

B) 3 psi per week

C) 10 psi

D) no more than 4 psi per minute

Question 11

How test air compressor?

A) build 85 to 100 psi within 45 seconds

B) honk test

C) no test

D) visual only

Question 12

How test the low-air warning?

A) ignore it

B) disconnect buzzer

C) fan brakes down, warning by 60 psi

D) drive fast

Question 13

How test spring brakes?

A) no test

B) ask mechanic

C) drive test

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

Question 14

What is a pre-trip air brake check order?

A) drive first

B) governor, warning, spring, leak, service

C) no order

D) any order

Question 15

What are slack adjusters?

A) fuel lines

B) mirror arms

C) steering parts

D) link pushrod to brake cam

Question 16

What is manual slack adjustment rule?

A) anyone adjusts

B) never check

C) daily manual

D) needs training; autos should not need it

Question 17

What is brake adjustment limit?

A) half foot

B) 3 inches

C) about 1 inch pushrod travel

D) no limit

Question 18

What are foundation brakes?

A) retarders

B) engine brakes

C) parking only

D) the wheel brake mechanisms

Question 19

What is an application pressure gauge?

A) fuel gauge

B) shows service brake air used

C) speedometer

D) oil gauge

Question 20

What are supply pressure gauges?

A) coolant

B) tire pressure

C) show tank air pressure

D) voltage

US Louisiana DMV CDL Air Brakes Test 8

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