Question 1

Technician A says the computer will make control commands to various output devices during the output function. Technician B says the computer uses the input information and compares it to programmed instructions during the processing function.

Accepted Answer

Technician A is correct in saying that the computer will send control commands to output devices during the output function. Technician B is also correct in saying that during the processing function, the computer uses the input information and compares it to programmed instructions to determine the appropriate output commands.

Question 2

Which of the following is an actuator?

Accepted Answer

All of the options (motor, relay, and solenoid) are examples of actuators, which are devices that convert electrical signals into physical movement or action. Motors typically rotate or move things, relays switch electrical circuits, and solenoids move mechanical components using magnetic fields.

Question 3

Wear a(n) ____ to ground your body to prevent static discharges that may damage electronic components.

Accepted Answer

The electrostatic discharge (ESD) strap is designed specifically to ground the body and prevent static discharges that can damage electronic components. Insulated gloves, approved set of work shoes, and ground wires can all be useful in certain situations, but they are not specifically designed for ESD protection.

Question 4

The storage function of the computer converts analog to digital signals.

Accepted Answer

The storage function of the computer does not convert analog to digital signals. Instead, it stores digital data in binary format. The conversion from analog to digital signals typically occurs in input devices such as a microphone or a camera.

Question 5

A stepper motor contains a permanent magnet armature.

Accepted Answer

A stepper motor does indeed contain a permanent magnet armature, which is a crucial component that interacts with the magnetic field to convert electrical energy into mechanical motion.

Question 6

Technician A says the output of one computer can also be used as an input to another computer. Technician B says a sensor is an output device. Who is correct?

Accepted Answer

Technician A is correct. This process is known as data sharing or networking. Technician B is incorrect as a sensor is an input device that provides data to a computer or other device.

Question 7

Actuators are devices that perform work commanded by a computer.

Accepted Answer

Actuators convert electrical signals into physical actions to perform work commanded by a computer.

Question 8

Technician A says a NOT gate simply reverses binary ones to zeros and vice versa. Technician B says AND gate operation is similar to two switches in series to a load. Who is correct?

Accepted Answer

Technician A is correct because a NOT gate, also known as an inverter, indeed reverses binary ones to zeros and vice versa. Technician B is also correct because an AND gate functions similarly to having two switches in series with a load, where both switches need to be closed (or "on") for the load to be activated, analogous to the AND gate requiring both inputs to be true (or "1") to output true (or "1").

Question 9

High-side drivers complete the actuator control circuit to ground.

Accepted Answer

High-side drivers complete the actuator control circuit to positive voltage, not ground.

Question 10

Technician A says RAM will store temporary information that can be read from or written to by the MP . Technician B says ROM can be written to and changed by the computer. Who is correct?

Accepted Answer

Technician A is correct in stating that RAM stores temporary information that can be read from or written to by the MP (microprocessor). However, Technician B is incorrect in stating that ROM can be written to and changed by the computer. ROM (read-only memory) is non-volatile memory that can only be read from, not written to or changed by the computer.

Question 11

Technician A says to test sensor signals, a breakout box can be used. Technician B says sensors can only be tested with a scan tool. Who is correct?

Accepted Answer

Both Technician A and B are incorrect. Sensor signals can be tested using a breakout box or a scan tool.

Question 12

____ are the output of the self-diagnostics program in the form of alpha/numeric codes that indicate faulty circuits or components.

Accepted Answer

Trouble codes are the output of the self-diagnostics program in the form of alpha/numeric codes that indicate faulty circuits or components. Shared circuits, components and harnesses, and computer malfunctions may be related to the cause of trouble codes, but they are not the direct output of the self-diagnostic program.

Question 13

A stepper motor may have two or four field coils.

Accepted Answer

A stepper motor may have two or four field coils, which are electromagnets that generate the magnetic field that interacts with the rotor to produce motion. The number of coils can vary depending on the specific design and application of the stepper motor.

Question 14

An interface protects the computer from excessive voltage.

Accepted Answer

An interface, such as a surge protector or UPS, can protect the computer from excessive voltage or power surges.

Question 15

Hard code failures are those that were detected the last time the BCM tested the circuit.

Accepted Answer

Hard code failures refer to failures that were detected and stored in the BCM's memory during the last test of the circuit.

Question 16

Technician A says when servicing the BCM, a test light should be used to check for voltage. Technician B says before making or breaking electrical connections to the BCM, make sure the ignition switch is off. Who is correct?

Accepted Answer

Using a test light to check for voltage on a Body Control Module (BCM) can potentially damage the sensitive electronics within the module due to the current draw of the test light. Therefore, Technician A is incorrect. Technician B is correct because turning off the ignition switch before making or breaking electrical connections helps prevent electrical shorts and potential damage to the BCM or other electronic components.

Question 17

If a malfunction results in improper system operation, the computer may minimize the effects by using ____ action.

Accepted Answer

Fail-safe action is used to minimize the effects of a malfunction in a system. It ensures that the system is able to continue functioning even if certain components or subsystems fail or malfunction. This is an important feature in critical systems where failure or malfunction could have serious consequences. By using fail-safe action, the computer is able to detect and isolate the malfunctioning component, and continue operating at a reduced level or with limited functionality. In contrast, bypass, breaking, or shut down actions would not minimize the effects of a malfunction, and could even make the situation worse.

Question 18

The NOT gate reverses binary code.

Accepted Answer

The NOT gate, also known as an inverter, flips the value of a binary input. If the input is 0, the output is 1, and vice versa. Therefore, it reverses the binary code.

Question 19

The brain of the computer is the central processing unit.

Accepted Answer

The central processing unit (CPU) is the brain of the computer, responsible for executing instructions and controlling the other components in the system.

Question 20

High resistance in the sensor return circuit can cause a faulty input from all sensors that use a shared circuit.

Accepted Answer

High resistance in the sensor return circuit can cause a voltage drop and affect the input signal from all sensors that share the same circuit, leading to faulty readings.

Quiz 8: Introduction to the Body Computerbody Computer System Diagnosis