Deck 45: Electronics and Computer Systems Fundamentals

Question 1

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

Answer 1

B

Question 2

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

Answer 2

True

Question 3

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

Answer 3

False

Question 4

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

Question 5

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 6

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

Question 7

A ____ is a one-way electrical check valve.

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

Question 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

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

Question 10

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

Question 11

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 12

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

Question 13

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 14

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 15

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

Question 16

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.

Question 17

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

Question 18

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

Question 19

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

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

Question 20

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 21

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

Question 22

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

Question 23

List five types of sensors.

Question 24

What are three purposes of solenoid actuators?

Question 25

What are the four functions of a computer?