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