Test Bank Auto Heating and Air Conditioning,

Test Bank Auto Heating and Air Conditioning, 5e Chris Johanson (Chapter 1-25) 100% Original Verified, A+ Grade

Final Exam

• ch01_exam_001

To prevent system damage, refrigerant must be ____ stable.

Correct Answer(s):

• chemically

• ch01_exam_002

The cooling system ____ limits coolant circulation until the engine reaches operating temperature.

Correct Answer(s):

• thermostat

• ch01_exam_003

A rear window defroster is a(n) ____ installed on the rear window glass.

Correct Answer(s):

• wire grid

• ch01_exam_004

The area just ahead of the windshield at the cowl is the ____ area.

Correct Answer(s):

• intake

• ch01_exam_005

Movable ____ control airflow through the ductwork.

Correct Answer(s):

• doors

• ch01_exam_006

Older ____ were found to be depleting the ozone layer. 1 / 4

Correct Answer(s):

• refrigerants

• ch01_exam_007

Most HVAC components are located at the vehicle _____.

Correct Answer(s):

• firewall
• bulkhead
• cowl

• ch01_exam_008

The accumulator or r eceiver-drier holds extra refrigerant and a(n) _____.

Correct Answer(s):

• desiccant

• ch01_exam_009

The heater core is warmed by ____.

Correct Answer(s):

• engine coolant

• ch01_exam_010

The refrigerant compressor is a type of ____.

Correct Answer(s):

• pump

• ch01_exam_011

Shortly after the closed car became popular, manufacturers began heating the interior with ____ instead of exhaust gases.

Correct Answer(s):

• coolant
• hot water

• / 4

• ch01_exam_012

Refrigerant leaves th e compressor as a high -pressure, high- temperature ____.

Correct Answer(s):

• vapor
• gas

• ch01_exam_013

HVAC fans are called ____ blowers.

Correct Answer(s):

• squirrel cage

• ch01_exam_014

The intake is formed from ____.

• plastic ducts
• fiberglass ducts

*c. the body sheet metal

• None of the above.

• ch01_exam_016

Heating, ventilating, and a ir conditioning systems ____ the air in the passenger compartment.

• cool or heat
• clean
• remove moisture from

*d. All of the above.

• ch01_exam_017

Since almost all vehicles have air conditioning, ____ have disappeared.

• hot coolant heaters
• heater shutoff valves

*c. window side vents

• Both A and B.

• ch01_exam_018

An accumulator or receiver -drier contains the ____.

• / 4

• high-pressure cutoff switch

*b. desiccant

• sight glass
• clutch cycling switch

• ch01_exam_019

Technician A says the cooling system thermostat controls maximum engine temperature. Technician B says the heater shutoff valve keeps the engine at a minimum operating temperature. Who is right?

• A only.
• B only.
• Both A and B.

*d. Neither A nor B.

• ch01_exam_020

On late-model vehicles, the blend doors can be operated by ____.

• cables
• vacuum diaphragms
• drivers

*d. All of the above.

• ch01_exam_021

What is the job of the desiccant?

• Lubricate the compressor.
• Store extra refrigerant.
• Muffle the compressor output.

*d. Remove moisture from the refrigerant.

• ch01_exam_022

The blend door controls the ____ of the air entering the passenger compartment.

• speed
• moisture

*c. temperature

• direction

• / 4