Auto 60 Mid term

5. A reading of 432 shows on the face of the meter set to the millivolt scale. The reading means ________.

0.432 volt

Which air impact drive size is the most commonly used?

1/2"

Which of the following describes an electrical fire?

Class c

A complete circuit that is continuous from source through loads and back to ground has ________.

Continuity

Electrical controls such as switches ________.

Control electrical flow in the circuit and May be on either the source or ground side of the circuit

Some of the wiring under the hood of a late model vehicle is encased in bright orange covering. This indicates ________.

High voltage electrical system

40. A voltmeter should be connected to the circuit being tested ________.

In parallel

What is the maximum pressure that should be used with compressed air nozzles?

30 PSI

36. Semiconductors have how many electrons in their valence rings?

4

22. If 12 volts are being applied to a resistance of 3 ohms, ________ amperes will flow.

4 amps

Inductive ammeters work because of what principle?

A magnetic field surrounds any wire carrying a current

If someone in the shop catches fire, which is the most appropriate device to use first?

Fire blanket

33. kHz is a unit describing what property?

Frequency

31. Ammeters should be connected ________ with the circuit being tested.

In series

25. Which type of DMM can measure current when clamped around a conductor?

Inductive

Which type of DMM can measure current when clamped around a conductor?

Inductive

To prevent blowing the meter fuse in a DMM ________.

Install a fuse in line with the meter lead and Never test resistance of an energized circuit

What type of material is indicated by this atomic structure?

Insulator

A positively charged atom is called a(n) ________.

Ion

A high strength bolt is identified by ________.

Lines on the head

The proper term for Vise Grips is ________.

Locking pliers

Which device illuminates a different color when connected to power or ground sides of a circuit?

Logic probe

When selecting a meter, percentage accuracy ratings that are ________ indicate more precise meters.

Lower

The proper term for Channel Locks is ________.

Multigroove adjustable pliers

20. Electrical power is calculated by ________.

Multiplying volts by current

Technician A says that most factory service manuals cover several years and models. Technician B says that most aftermarket service manuals only cover one year and model vehicle. Which technician is correct?

Neither technician

Technician A says that wrenches are made of cast iron. Technician B says that an open end wrench is the best tool to loosen a seized fastener. Which technician is correct?

Neither technician

In a circuit with a short to ground ________.

No current flows past the point of the short and Some or all of the electrical loads may no longer work

30. In an incomplete circuit ________.

No current will flow no volts

Which type of screwdriver can also be used as a chisel?

None

A meter is set to read DC volts on the 4-volt scale. The meter leads are connected at a 12-volt battery. The display will read ________.

OL

Which type of screwdriver should be used if there is limited space above the head of the fastener?

Offset screwdriver

44. An ohmmeter should be connected to the circuit or component being tested ________.

Only when no power is flowing (electrically open circuit) and In parallel

43. When measuring resistance, a reading of OL on the DMM indicates ________.

Open

The correct location for the pads when hoisting or jacking the vehicle can often be found in the ________.

Owner's manual, Service manual, Shop manual

21. Which term describes electrical current resulting from pressure applied to certain crystals?

Piezoelectricity

3. Which term describes electrical current resulting from pressure applied to certain crystals?

Piezoelectricity

34. Voltage supplied to a potentiometer may be called ________.

Reference voltage

Voltage supplied to a potentiometer may be called ________.

Reference voltage

37. Carbon and silicon are examples of ________.

Semiconductors

41. If an insulated (power side) wire rubbed through a part of the insulation and the wire conductor touched the steel body of a vehicle, the type of failure would be called a(an) ________.

Short-to-ground

With which signal pattern is the RMS reading the same as the average reading?

Sine wave

A fastener that uses threads on both ends is called a ________.

Stud

2. Which device produces electrical current resulting from heating of two dissimilar conductors?

Thermocouple

Which device produces electrical current resulting from heating of two dissimilar conductors?

Thermocouple

Which statement regarding drive-on ramps is correct?

They tend to "kick out" when driving up the ramps, The wheels on the ground should be chocked to prevent vehicle movement

What will happen if like poles of two magnets are moved close together?

They will repel each other

19. A potentiometer usually has how many wires?

Three

A potentiometer, a three-wire variable resistor, is used in which type of sensor?

Throttle position TPS or TP

What is the symbol for voltage used in calculations?

V or E

The outer electron shell is known as a(an) ________.

Valence ring

23. The ________ is a unit of electrical pressure.

Volt

6. The internal resistance of any meter is only effective if the meter is set on the ________ scales.

Voltmeter

37. Which of these is also known as electrical potential or pressure?

Volts

27. Which of these describes electrical power?

Watts

39. Which of these describes electrical power?

Watts

Which of these automotive components does NOT rely on magnetism to operate correctly?

Wheel bearing

A shorted circuit ________.

Will not Always causes the fuse to blow, Will not include an open circuit.

Which character of the VIN indicates the year of the vehicle?

10th

46. A rheostat usually has how many wires?

2

The tenth character represents the year of the vehicle. If the tenth character is a "Y" what year is the vehicle?

2000

The highest amount of resistance that can be read by the meter set to the 2 kΩ scale is ________.

2000 ohms

35. An electrical circuit uses 12 volts and has a current flow of 2 amps. What is the wattage?

24 watts

What is NOT considered personal safety equipment?

Air impact wrench

A meter used to measure amperes is called a(an) ________.

Ammeter

29. A DMM is set to read ohms. The reading of OL shown means ________.

An open circuit

Technician A says that 6 point socket is more likely than a 12 point socket to round off a fastener head. Technician B says that a 12 point socket is more likely than a 6 point socket to round off a fastener head. Which technician is correct?

B only

Technician A says that safety glasses are only necessary when working with power tools. Technician B says to remove jewelry when performing automotive service. Which technician is correct?

B only

Technician A says that the number of threads per inch on a metric bolt, is called pitch. Technician B says that metric bolt threads are designated by the distance between threads measured in millimeters. Which technician is correct?

B only

Technician A says that water based fire extinguishers remove oxygen from the fire. Technician B says that CO2 fire extinguishers remove oxygen from the fire. Which technician is correct?

B only

Two technicians are discussing torque wrenches. Technician A says that a torque wrench is capable of tightening a fastener with more torque than a conventional breaker bar or ratchet. Technician B says that a torque wrench should be calibrated regularly for the most accurate results. Which technician is correct?

B only

29. Technician A says to use lineman's gloves when servicing the high voltage system on hybrid electric vehicles. Technician B says that hybrid vehicles have a plug to disable the high voltage system before service. Which technician is correct?

Both

Technician A uses tall safety stands to provide additional support for a vehicle in a lift. Technician B always lowers the vehicle on the mechanical locks after lifting the vehicle to proper working height. Which technician is correct?

Both

Technician A says that a dry chemical fire extinguisher can be used on class A, B and C fires. Technician B says that the chemical used in these fire extinguishers can be corrosive. Which technician is correct?

Both technicians

Technician A says that clicker type torque wrenches should be calibrated regularly. Technician B says to store clicker torque wrenches at their minimum (zero) setting. Which technician is correct?

Both technicians

Technician A uses tall safety stands to provide additional support for a vehicle in a lift. Technician B always lowers the vehicle on the mechanical locks after lifting the vehicle to proper working height. Which technician is correct?

Both technicians

When using a DMM, the black lead usually goes in which port?

COM

18. Excessive corrosion on an electrical connector ________.

Can cause lights to be dim

32. A loose ground connection ________.

Causes less power to be available to the electrical components and Causes reduced current flow

24. Most carbon resistors indicate their electrical resistance by ________.

Color coded markings

current from + to - indicates current flow using which theory of current flow?

Conventional Theory

Which term is used to describe the resolution of a meter?

Counts or Digits

Which type of hammer is plastic coated, has a metal casing inside, and is filled with small lead balls?

Dead-blow hammer

Which term is used to describe the resolution of a meter?

Digits or Counts

Digital meters for automotive testing should include ________.

Diode tester and DC amps up to at least 10A

In a circuit with high resistance ________.

Electrical loads may still operate but less efficiently

26. What term describes the movement of electrons from one atom to another?

Electricity

If a conductor is moved through a magnetic field ________ is produced.

Electricity

17. The automotive battery is based on the principle of ________.

Electrochemistry

If the first character of the VIN is an "S," where was the vehicle made?

England

Technician A says that resistance increases as the diameter of a conductor increases. Technician B says that resistance increases as the temperature of a conductor increases. Which technician is correct?

Technician B only

Technician A says that safety glasses are only necessary when working with power tools. Technician B says to remove jewelry when performing automotive service. Which technician is correct?

Technician B only

45. As temperature increases, ________.

The resistance of a conductor increases

1. When jump-starting a vehicle, which of these connections is the last connection to be made?

ground on vehicle being jumped