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

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

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) hydraulic fluid

D) electricity

Question 2

What is governor cut-in pressure?

A) about 100 psi (85-100 range)

B) 60 psi

C) 150 psi

D) 200 psi

Question 3

What is governor cut-out pressure?

A) about 125 psi (120-135 range)

B) 200 psi

C) 60 psi

D) 90 psi

Question 4

At what pressure does low-air warning activate?

A) 100 psi

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

C) 125 psi

D) 20 psi

Question 5

What are spring brakes?

A) emergency/parking brakes applying on air loss

B) steering brakes

C) no brakes

D) service brakes

Question 6

What is the dual air brake system?

A) two separate systems for safety

B) no dual

C) single only

D) steering only

Question 7

What must you do before driving after starting?

A) no check

B) drive at 50 psi

C) mirrors only

D) build pressure 100-125 psi and test

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) 10 psi

B) 1 psi per hour

C) no limit

D) no more than 3 psi per minute

Question 10

What is the air loss limit (combination)?

A) 3 psi per week

B) no limit

C) no more than 4 psi per minute

D) 10 psi

Question 11

How test air compressor?

A) no test

B) build 85 to 100 psi within 45 seconds

C) honk test

D) visual only

Question 12

How test the low-air warning?

A) fan brakes down, warning by 60 psi

B) drive fast

C) disconnect buzzer

D) ignore it

Question 13

How test spring brakes?

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

B) no test

C) ask mechanic

D) drive test

Question 14

What is a pre-trip air brake check order?

A) drive first

B) any order

C) governor, warning, spring, leak, service

D) no order

Question 15

What are slack adjusters?

A) mirror arms

B) link pushrod to brake cam

C) steering parts

D) fuel lines

Question 16

What is manual slack adjustment rule?

A) daily manual

B) needs training; autos should not need it

C) anyone adjusts

D) never check

Question 17

What is brake adjustment limit?

A) about 1 inch pushrod travel

B) 3 inches

C) half foot

D) no limit

Question 18

What are foundation brakes?

A) parking only

B) retarders

C) the wheel brake mechanisms

D) engine brakes

Question 19

What is an application pressure gauge?

A) oil gauge

B) fuel gauge

C) shows service brake air used

D) speedometer

Question 20

What are supply pressure gauges?

A) coolant

B) tire pressure

C) show tank air pressure

D) voltage

US Massachusetts DMV CDL Air Brakes Test 8

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