Test Bank for Todays Technician Automotive Heating & Air Conditioning Classroom Manual and Shop Manual, 5th Edition

Test Bank for Todays Technician Automotive Heating & Air Conditioning Classroom Manual and Shop Manual, 5th Edition

1.            Heat flows from a hot object to an object containing less heat.

                ANS: T   PTS: 1

2.            Humidity refers to the amount of heat in the air.

                ANS: F   PTS: 1

3.            Heat is removed from the body by the process of evaporation.

                ANS: T   PTS: 1

4.            Heat required to turn water into steam is latent heat.

                ANS: T   PTS: 1

5.            Gravity causes warm air to sink.

                ANS: F   PTS: 1

6.            Specific heat is the same as sensible heat.

                ANS: F   PTS: 1

7.            The radiation process is not affected by the surrounding air temperature.

                ANS: T   PTS: 1

8.            Air movement increases the body’s rate of cooling.

                ANS: T   PTS: 1

9.            Heat is the absence of cold.

                ANS: F   PTS: 1

10.          As heat energy is added to a liquid, the speed of its molecules increases.

                ANS: T   PTS: 1

MULTIPLE CHOICE

1.            How is heat transfer by convection accomplished?

a.            Heat travels by infrared rays.

b.            Heat travels by radio waves.

c.             Heat travels through the surroundind air.

d.            The coller and warmer objects are touching.

                ANS: C PTS: 1

2.            Technician A says latent heat is hidden heat. Technician B says latent heat is required for a change of state. Who is correct?

a.            Technician A only             c. Both A and B

b.            Technician B only             d. Neither A nor B

                ANS: C PTS: 1

3.            Sensible heat can be measured with

a.            a pressure gauge.            c. a scale.

b.            a thermometer.               d. all of the above.

                ANS: B PTS: 1

4.            All of the following are true of voltage drops EXCEPT:

a.            Voltage drop is the conversion of electrical energy into another form of energy.

b.            Corrosion in a circuit does not cause a voltage drop.

c.             All of the source voltage in a circuit must be dropped.

d.            Voltage drop can be measured with a voltmeter.

                ANS: B PTS: 1

5.            All of the following statements about oxygen are true, EXCEPT:

a.            Oxygen makes up 78 percent of the air we breathe.

b.            Oxygen is essential to all animal life.

c.             Oxygen combines readily with other elements to form complex chemicals.

d.            Oxygen is normally a gas.

                ANS: A PTS: 1

6.            The word latent means

a.            hot.        c. transfer.

b.            cold.      d. hidden.

                ANS: D PTS: 1

7.            All of the following statements about heat transfer are true, EXCEPT:

a.            Molecular motion is transmitted to molecules that have less motion.

b.            Some of the molecules give up their energy to other molecules that have more energy.

c.             Heat flows from matter at a higher temperature to matter at a lower temperature.

d.            Heat never flows from low-temperature matter to high-temperature matter.

                ANS: B PTS: 1

8.            The acceptable comfort range for the human body is:

a.            45-50 percent relative humidity                 c. Both A and B

b.            72°F-80°F             d. Neither A nor B

                ANS: C PTS: 1

9.            The sun heats the earth through the process of

a.            convection.        c. radiation.

b.            conduction.        d. all of the above.

                ANS: C PTS: 1

10.          Technician A says sensible heat can be measured. Technician B says specific heat is the amount of heat required to change one pound of a substance by 1°F. Who is correct?

a.            Technician A only             c. Both A and B

b.            Technician B only             d. Neither A nor B

                ANS: C PTS: 1

11.          Technician A says convection may occur in liquids and gases. Technician B says conduction can occur between two substances that are at different temperatures. Who is correct?

a.            Technician A only             c. Both A and B

b.            Technician B only             d. Neither A nor B

ANS: C PTS: 1

12.          The ideal relative humidity is between ____ and ____ percent.

a.            10, 100 c. 30, 70

b.            20, 80    d. 40, 60

                ANS: D PTS: 1

13.          One British thermal unit (Btu) contains ____ calories.

a.            144         c. 252

b.            212         d. 970

                ANS: C PTS: 1

14.          Technician A says latent heat cannot be felt. Technician B says latent heat cannot be measured with a thermometer. Who is correct?

a.            Technician A only             c. Both A and B

b.            Technician B only             d. Neither A nor B

                ANS: C PTS: 1

15.          The metric term for pressure (psi) is

a.            Kilogram (kg).    c. Liter per millimeter (Lm).

b.            KiloPascal (kPa).               d. Liter per centimeter (Lc).

                ANS: B PTS: 1