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

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

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) electricity

B) compressed air

C) springs only

D) hydraulic fluid

Question 2

What is governor cut-in pressure?

A) 150 psi

B) 200 psi

C) about 100 psi (85-100 range)

D) 60 psi

Question 3

What is governor cut-out pressure?

A) 200 psi

B) about 125 psi (120-135 range)

C) 60 psi

D) 90 psi

Question 4

At what pressure does low-air warning activate?

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

B) 125 psi

C) 100 psi

D) 20 psi

Question 5

What are spring brakes?

A) service brakes

B) emergency/parking brakes applying on air loss

C) no brakes

D) steering brakes

Question 6

What is the dual air brake system?

A) two separate systems for safety

B) steering only

C) no dual

D) single only

Question 7

What must you do before driving after starting?

A) no check

B) build pressure 100-125 psi and test

C) drive at 50 psi

D) mirrors only

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) no limit

C) 10 psi

D) no more than 3 psi per minute

Question 10

What is the air loss limit (combination)?

A) 10 psi

B) 3 psi per week

C) no more than 4 psi per minute

D) no limit

Question 11

How test air compressor?

A) no test

B) build 85 to 100 psi within 45 seconds

C) visual only

D) honk test

Question 12

How test the low-air warning?

A) drive fast

B) fan brakes down, warning by 60 psi

C) disconnect buzzer

D) ignore it

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) any order

B) governor, warning, spring, leak, service

C) no order

D) drive first

Question 15

What are slack adjusters?

A) steering parts

B) link pushrod to brake cam

C) fuel lines

D) mirror arms

Question 16

What is manual slack adjustment rule?

A) anyone adjusts

B) never check

C) needs training; autos should not need it

D) daily manual

Question 17

What is brake adjustment limit?

A) about 1 inch pushrod travel

B) no limit

C) 3 inches

D) half foot

Question 18

What are foundation brakes?

A) retarders

B) engine brakes

C) the wheel brake mechanisms

D) parking only

Question 19

What is an application pressure gauge?

A) shows service brake air used

B) fuel gauge

C) speedometer

D) oil gauge

Question 20

What are supply pressure gauges?

A) coolant

B) show tank air pressure

C) tire pressure

D) voltage

US South Dakota DMV CDL Air Brakes Test 8

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