Deck 45: Electronics and Computer Systems Fundamentals

Question 1

6)While having a discussion, Technician A says that in a diode, holes flow in the direction of the arrow, while electrons go against the arrow. Technician B says that holes flow against the arrow, while electrons flow in the direction of the arrow. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Answer 1

A

Question 2

20)A(n) ____________________ code is one that only occurs occasionally for a short time and is not present in the system at the time of the fault test.

Answer 2

intermittent fault

Question 3

4)Actuators are the devices that act upon processed signals received from the computer.

Answer 3

True

Question 4

14)The part that is MOST-Likely used to vary the fuel system to operate at the correct air-fuel ratio in closed loop is:

A) thermistor
B) adaptive fuel trim
C) resonator
D) microprocessor

Question 5

15)The technology that MOST-Likely blends computers and wireless telecommunications, combining global positioning satellite (GPS) tracking and other wireless communications for automatic roadside assistance and remote diagnostics is:

A) telematics
B) ROM
C) RAM
D) DSRC

Question 6

2)A V-type semiconductor is positively charged and can carry electrical current.

Question 7

17)The ____________________ is the calculating and decision-making chip in the computer.

Question 8

8)While having a discussion, Technician A says that reverse bias diodes allow current to flow. Technician B says that forward bias diodes allow current to flow. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 9

1)N-type semiconductors have five or more electrons in their outer valence ring.

Question 10

5)Keep-alive memory means the computer maintains power to RAM when the ignition switch is off.

Question 11

19)A(n) ____________________ is a variable resistor made from semiconductor material.

Question 12

13)All of the following statements are true EXCEPT:

A) a knock sensor has a piezoelectric crystal sensing element that senses vibration and creates a voltage signal of 100 to 200 mV.
B) an oxygen (O₂) sensor is a variable DC voltage generator.
C) pulse generators are signal generators.
D) in a variable AC voltage generator, a magnetic pickup generates an AC analog signal with a positive and negative sine wave.

Question 13

3)Random access memory (RAM) is permanently programmed information available to the microprocessor.

Question 14

18)____________________ access means that information can be retrieved in any order.

Question 15

10)Which of the following is LEAST-Likely one of the three main parts of an automotive computer system?

A) Plenum
B) Actuators
C) Sensors
D) Computer

Question 16

11)All of the following statements are true EXCEPT:

A) computers in most North American vehicles use ground-side switching with current-limiting devices.
B) most European and some Japanese manufacturers use power-side switching.
C) power-side switching minimizes galvanic corrosion because electrons move in their normal direction.
D) automotive computer systems since the mid-eighties have operated on 10 volts.

Question 17

9)Which of the following statements is LEAST-Likely true?

A) An integrated circuit (IC) is a complete miniaturized electric circuit.
B) An integrated circuit consumes considerably more electrical current than a large-scale circuit.
C) As many as 30,000 transistors can be placed on a chip that is only 1/4" square.
D) ICs are limited in the amount of electrical current they can carry.

Question 18

16)A(n) ____________________ diode is one whose crystals are more heavily doped during manufacturing.

Question 19

7)A ____ is a one-way electrical check valve.

A) plenum
B) diode
C) byte
D) thermistor

Question 20

12)A(n) ____ is an electronic or magnetic relay that can perform a desired function.

A) diode
B) sensor
C) actuator
D) monitor

Question 21

22)What are the four functions of a computer?

Question 22

23)List five types of sensors.

Question 23

25)Briefly discuss the following network topologies: daisy chain, star, bus, and ring.

Question 24

24)What are three purposes of solenoid actuators?

Question 25

21)What is the purpose of the following semiconductor crystals in a transistor: emitter, base, and collector?