US Mississippi DMV CDL Air Brakes Test 6

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

Prepared with up-to-date content

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

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

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

True or false in Mississippi: both black.

A) True

B) False

Question 2

True or false in Mississippi: any way.

A) True

B) False

Question 3

True or false in Mississippi: highway test.

A) True

B) False

Question 4

True or false in Mississippi: shorter.

A) True

B) False

Question 5

Which is correct about CDL air brakes in Mississippi?

A) compressed air

B) electricity

C) springs only

D) hydraulic fluid

Question 6

What powers air brakes?

A) electricity

B) compressed air

C) hydraulic fluid

D) springs only

Question 7

What is governor cut-in pressure?

A) 60 psi

B) 200 psi

C) about 100 psi (85-100 range)

D) 150 psi

Question 8

What is governor cut-out pressure?

A) 60 psi

B) 90 psi

C) about 125 psi (120-135 range)

D) 200 psi

Question 9

At what pressure does low-air warning activate?

A) 100 psi

B) 125 psi

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

D) 20 psi

Question 10

What are spring brakes?

A) no brakes

B) emergency/parking brakes applying on air loss

C) steering brakes

D) service brakes

Question 11

What is the dual air brake system?

A) steering only

B) two separate systems for safety

C) single only

D) no dual

Question 12

What must you do before driving after starting?

A) build pressure 100-125 psi and test

B) no check

C) drive at 50 psi

D) mirrors only

Question 13

What is brake lag in air brakes?

A) no lag

B) delay between pedal and application

C) hydraulic only

D) instant action

Question 14

What is the air loss limit (single vehicle)?

A) no limit

B) 10 psi

C) no more than 3 psi per minute

D) 1 psi per hour

Question 15

What is the air loss limit (combination)?

A) no more than 4 psi per minute

B) 10 psi

C) no limit

D) 3 psi per week

Question 16

How test air compressor?

A) honk test

B) visual only

C) no test

D) build 85 to 100 psi within 45 seconds

Question 17

How test the low-air warning?

A) ignore it

B) fan brakes down, warning by 60 psi

C) disconnect buzzer

D) drive fast

Question 18

How test spring brakes?

A) ask mechanic

B) drive test

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

D) no test

Question 19

What is a pre-trip air brake check order?

A) any order

B) drive first

C) governor, warning, spring, leak, service

D) no order

Question 20

What are slack adjusters?

A) link pushrod to brake cam

B) steering parts

C) mirror arms

D) fuel lines

US Mississippi DMV CDL Air Brakes Test 6

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