Electricity Final

Ch 14 Choose the correct statement with respect to gear reduction starters a. they allow the starter to spin at a lower speed while drawing less current from the storage battery b. they use one lesser gear between the armature and the starter drive mechanism c. a gear reduction system using planetary gears requires an offset housing d. they are smaller and lighter but develop a higher torque output than their direct drive counterparts

d

Ch 15 The quantity of voltage potential induced by an AC generator depends on all of the following EXCEPT a. the strength of the magnetic field b. the speed at which the magnet rotates c. the number of turns of wire on the stationary coil d. the number of conductors

d

Ch 8 All of the following are circuit protection devices EXCEPT a. fusible links b. circuit breakers c. PTC thermistors d. capacitors

d

Ch 13 The type of battery that is most common in automobiles is a. lithium-ion battery b. lead-acid battery c. nickel-cadmium battery d. zinc-bromine batter

b

Ch2 You can use a disposable dust mask to protect yourself against a. asbestos dust b. brake dust c. brake fluid vapors d. paint solvents

b

Ch7 The physical restriction of the conductor is represented as a. current b. resistance c. voltage d. potential

b

ADV Ch 12 All of the following are inputs to an ECU EXCEPT a. Ambient temp sensor b. Switch c. Blower motor d. Wheel speed sensor

c

Ch7 All of the following mathematical equations are true with respect to ohms law EXCEPT a. A = V / R b. V = A x R c. R = V + 2A d. R = V / A

c

ADV Ch 10 A reed switch is used for which of the following warning indicator types a. Low brake fluid b. Oil Pressure c. Engine coolant temp d. Low fuel

a

ADV Ch 10 Choose the correct statement with respect to bi-metallic arm fuel gauge a. The sending unit is at its highest resistance when the tank is near empty b. It will not return to the min. position after the ignition is turned off c. A voltage regulator is not required in the circuit d. The sending unit is at its lowest resistance when the tank is near Empty

a

ADV Ch 11 A Zener diode is often used for which of the following a. To regulate voltage b. To block current at all voltage levels c. To function as a variable resistor d. To determine if it is dark enough to turn on the headlights

a

ADV Ch 11 All of the following can determine component speed EXCEPT a. MOSFET b. Hall-effect sensor c. magneto resistive sensor d. optical sensor

a

ADV Ch 11 The Horizontal axis of the DSO display is for which of the following a. Time per division b. Voltage per division c. Frequency d. Duty cycle

a

ADV Ch 11 When measuring duty cycle the - lead of the DMM should be placed at what point in the circuit a. Known good ground b. Signal wire c. Voltage source of the battery d. The wire that supplies source voltage to the sensor circuit

a

ADV Ch 15 A clock spring type electrical cable is used to maintain the electrical connection between the SRS ECU and driver side airbag at all times. Installing a replacement spiral cable requires that the a. Front wheels be in the straight-ahead position b. Steering wheel is a 3 o'clock c. Rear wheels be in the straight-ahead position d. Steering wheel is at 6 o'clock

a

ADV Ch 15 The g-force sensor is used for which of the following? a. Deceleration rate b. First trigger that airbag deployment is required c. Determining passenger weight d. Providing power if there is an electrical system failure during a collision event

a

ADV Ch 16 After a successful pairing process, the phone should connect to the vehicle a. Automatically on every start cycle b. Whenever it is idle c. Whenever the user initiates a pairing d. Whenever the phone number changes

a

ADV Ch 16 Which of the following is least commonly used to control a vehicles infotainment system a. Hand gesture controls b. Voice commands c. Touch screen d. Buttons

a

ADV Ch 6 The voltage drop test is the best test for isolating a. high resistance faults b. open circuit c. short circuit d. parasitic draw

a

ADV Ch 6 When there is a resistance that is causing an excessive voltage drop at some point before or after the circuit load, what type of circuit fault is it a. High resistance circuit fault b. Shared voltage fault c. Parasitic draw d. Short circuit

a

ADV Ch 7 A 5pin relay features all of the following EXCEPT a. uses two relay coils to create a stronger magnetic field b. used DIN pin numbers 87 and 87a for switch contacts c. functions to direct current to one of two different paths d. one of the switch contacts is always connected to pin 30

a

Ch 12 A GMM has all of the following advantages over a traditional DMM EXCEPT a. it can present processed data after a few milliseconds b. it can present electrical information on a graphical display c. it is capable of performing playback on graphical display d. it has a relatively high sample rate

a

Ch 12 In a GMM, the "sweet spot" for viewing the information will often be toward the a. middle of the refresh rate settings b. higher end of the refresh rate settings c. lower end of the refresh rate settings d. default setting

a

Ch 12 the major difference between a GMM and a DVOM is that a GMM a. contains the vehicle and component database in itself b. can measure amps, volts, and ohms precisely c. can diagnose harness problems d. can measure the electricity output of a battery

a

Ch 13 All of the following statements are true EXCEPT a. a battery consists of two similar metals b. an automotive battery can supply very high discharge currents while maintaining a high voltage c. the fundamental components and operation of the battery remain the same irrespective of the size and usage d. batteries store electricity in chemical form

a

Ch 14 The revolving component of the DC motor that is responsible for cranking over the ICE is the a. armature b. large permanent magnets c. commutator d. brushes

a

Ch 14 What is the main purpose of the starter system in a vehicle a. To crank the vehicles ICE b. to start the vehicles electrical system c. to start the HVAC system d. To start the conversion of chemical energy to mechanical energy

a

Ch 14 Which of the following components switches the high current flow required by the starter motor on and off, and engages the starter drive with the ring gear a. solenoid b. armature c. commutator d. drive pinion

a

Ch 15 Before leaving the alternator, AC voltage is converted to DC voltage by the a. rectifier assembly b. rotor c. stator d. brush assembly

a

Ch 6 Which of the following requires the shortest period of time to reach a useable state a. Electricity b. Oil c. Ethanol d. Biodiesel

a

Ch 8 Which of these stops excessive current flow from potentially damaging the components of a circuit a. fuse b. transformer c. rheostat d. nc contact

a

Ch 9 A diode is positioned in such a way that current is allowed to pass through it, causing a small voltage drop across it. The diode is a. forward biased b. reverse biased c. Zener diode d. faulty

a

Ch 9 Which type of transistor is capable of switching very high current loads and voltages at high frequencies a. IGBT b. MOSFET c. FET d. BJT

a

Ch5 Which of the following materials is typically used in the construction of semiconductors a. Silicon b. Copper c. Plastic d. Ceramic

a

Ch7 If the voltage is doubled and the resistance stays the same, then amperage will a. double b. triple c. be halved d. remain the same

a

Ch7 Ohms law helps us to understand the relationship between a. volts, amps, and ohms b. meter, amps, and watts c. volts, amps, and watts d. amps, watts, and ohms

a

Ch 6 All of the following statements are true with respect to the use of thermoelectric devices EXCEPT a. they are used in gas-fired appliances as a means to prove the presence of a flame b. They are used in the development of engine designs c. They are used to measure the high temps of components, such as spark plugs d. They are used to store voltage from another source

d

Ch 8 When a two-terminal switch connected to a light bulb is turned off, all of the following will happen EXCEPT a. switches open the circuit b. current flow stops c. light goes out d. the circuit is closed

d

ADV Ch 10 A balanced coil type fuel gauge will usually read at what fuel level if there is an open circuit group a. Low fuel b. Full fuel level c. Half fuel level d. Empty Fuel level

b

ADV Ch 11 Choose the correct statement with respect to electronic components a. They have moving parts b. They manipulate electrical energy to produce very specific outcomes c. They are only used individually in the circuits d. They cannot function as electrical components in a circuit

b

ADV Ch 11 Which of the following may be used as an output driver a. Resistor b. IGBT c. Thermistor d. Hall-effect device

b

ADV Ch 16 What is the most preferred form of connection when listening to music that is stored on the phone a. Wi-Fi b. Wired c. Bluetooth d. Radi Wave

b

ADV Ch 5 Lines in a wiring diagram represent a. connectors b. wires c. relays d. switches

b

ADV Ch 5 What does the lower portion of the circuit show a. Wiring from the power source b. Circuit path to ground c. Fog lights d. Circuit breakers

b

ADV Ch 6 Choose the correct statement with respect to performing the resistance test a. Its performed by placing the + lead on the most + portion of the circuit and the - lead on the most - portion of the circuit b. Its performed with the circuit off and by isolating the component of portion of the circuit you will be testing c. Its performed by measuring source voltage at the battery with the vehicle off and all electrical loads off d. Its performed with the circuit on and by isolating the component or portion of the circuit you will be testing

b

ADV Ch 7 Choose the correct statement with respect to the automotive relay function a. relay is often used in auto circuits when the load requires less current to operate b. the relay uses an inductive coil to create a magnetic field when it is energized c. relays are always placed outside the printed circuit board d. the relay uses magnets to create an electric field

b

ADV Ch 8 Choose the correct statement with respect to high-intensity discharge lamps a. The ballast reduces the voltage to the bulb b. The ballast increases the voltage and regulates the current c. HID headlamp bulbs run on low voltage direct current d. They produce lesser glare when compared to halogen lamps

b

ADV Ch 8 Stop light circuits usually have use a switch that features which of the following a. No adjustment b. Located on the source side of the load c. Controls the path to ground in the circuit d. Features normally closed contacts

b

ADV Ch 9 Power window switches usually feature all of the following EXCEPT a. Auto up/down operation b. Mechanical master gang type switch connection to the related door switch c. a lockout feature to disable the function of the passenger door switch(es). d. features normally open contacts

b

Ch 14 All of the following are part of a starter system EXCEPT a. battery b. torque converter c. solenoid d. ignition switch

b

Ch 15 Due to the short length of the rotor, the cooling air needs to be spiraled in. To achieve this spiraling effect a. a centrifugal cooling fan is used b. cooling fins have small and large openings c. the position of heat sinks in the rectifier assembly is manipulated d. a drive pulley is used

b

Ch 15 How is the output voltage controlled in an alternator a. by varying the current to the stator b. by switching the rotors field circuit on and off c. by varying the position of the brushes d. by using the alternator drive pulley

b

Ch 6 When two dissimilar metals are immersed in an acidic liquid, the breakdown of chemicals into charged particles results in a flow of electricity. This principle is used in a(n) a. HVAC system b. battery c. sensor d. LED

b

Ch 6 Which of the following is the process of converting light energy to electrical energy a. Thermoelectric effect b. Photovoltaic effect c. Electrochemical effect d. Piezoelectric effect

b

Ch 8 Choose the correct statement a. PTC has high resistance at room temp b. PTC is generally reset and is allowed to cool after maximum resistance c. PTC resistance increases as temp decreases d. PTC resistance increases as flow decreases

b

Ch 9 Which of the following statements is true with respect to a common diode in an electrical circuit a. it allows current to pass rapidly through the circuit b. It allows current in one direction and essentially blocks it in the opposite direction c. it functions as an electronic version of a two-way check valve d. If current is flowing through it, then it is reverse-biased

b

Ch7 The value of current in a circuit with 12 Volts and resistance is 2 ohms is a. 3 amps b. 6 amps c. 2 amps d. 10 amps

b

Ch2 Neoprene gloves are ideal for protection from a. dust b. heavy material c. changing workplace temps d. certain acids and other chemicals

d

Ch5 Electromotive force can be best described as the a. force of electrons repelling each other b. repelling force of the negative terminal c. attracting force of the positive terminal d. force of attraction/repelling which drives the electrons to move along

d

Ch5 The degree to which a material opposes the passage of electrical current through it is called a. voltage b. resistance c. discharge d. insulation

d

Ch5 Which of the following is a measure of the number of electrical current through it is called a. volt b. watt c. ohm d. amp

d

ADV Ch 10 Which type of operation do the gauges in non-ECU type rely on a. Purely electrical operation b. Purely mechanical operation c. Electro-mechanical operation d. Electromagnetic operation

c

ADV Ch 11 The DMM shown is displaying which of the following a. 50.0V b. 50 cycles per second c. 50% duty cycle d.50.0mV

c

ADV Ch 15 All of the following are usually input data to the SRS ECU EXCEPT a. Vehicle Speed b. Brake pedal application c. LATCH anchors are in use d. Occupant classification status

c

ADV Ch 15 What do fully electronic impact sensors use to detect acceleration forces a. A steel ball held in place by a magnet b. A rotating cam c. Piezoelectric elements d. Integrated circuits

c

ADV Ch 16 Voice commands can be used to perform all of the following functions EXCEPT a. Answer the phone b. Place a call c. Accelerate the vehicle d. Set a navigation destination

c

ADV Ch 5 Technicians interpret the actual components on the vehicle with the help of wiring diagrams. they contain large amounts of information in the form of a. numbers and alphabets b. lines and numbers c. lines and symbols d. alphabets and lines

c

ADV Ch 5 The top portion of the wiring diagram layout usually has information on a. components that form the circuit, including switches, relays, and the load b. the circuit path to ground c. the source related components d. the key for wiring diagram symbols, abbreviations, and wire colors

c

ADV Ch 6 What is a short circuit a. A circuit that no longer has a continuous path for current b. A circuit that shares its voltage with another, causing it to operate at the same time c. Current bypasses the load and goes directly to ground d. The battery has low or no charge to start the vehicle

c

ADV Ch 9 The blower motor functions on Hi and M2 only. which of the following would most likely cause this concern a. Open motor ground b. Damaged blower motor brushes c. Open in resistor block middle resistor d. Open in blower motor relay coil

c

ADV Ch 9 Which of the following motors uses an encoder to determine the exact position of the rotor and provide the input to ECU a. DC stepper motor b. AC stepper motor c. DC servomotor d. Electromagnetic DC motor

c

Ch 12 Which of the following can be accurately done using GMMs but cannot be achieved using DMMs a. Measuring resistance in the connectors b. Diagnosing issues in the electronic communication system in the vehicle c. Determining the position of a sensor using live data d. Checking the battery life in the vehicle

c

Ch 12 Which of the following statements is true regarding graphing multimeters (GMM) a. they are used only in high end circuits b. the device can sometimes give inaccurate readings c. it is particularly useful in diagnosing an electrical problem that occurs intermittently d. the device may fail to perform when the volume of information is large

c

Ch 13 Which of these does a battery convert into electrical energy a. Heat energy b. Mechanical energy c. Chemical energy d. Light energy

c

Ch 6 When pre-ignition detonation is present, which of these prompts the ECM to adjust ignition timing and/or fuel delivery a. Thermoelectric energy b. Photovoltaic energy c. Piezoelectric energy d. Electrochemical energy

c

Ch 8 Which of the following have an operating mechanism similar to that of circuit breakers a. Fusible links b. Push buttons c. Flash cans and flash controls d. Toggle switches

c

Ch 9 All of the following statements are true with respect to LEDs in automobiles EXCEPT a. They emit a clean and brilliant light b. They consume less current than incandescent lights c. They do not need a resistor to operate properly d. They are usually connected with resistors in series

c

Ch2 The list of steps required to get the same result each time a task or activity is performed is known as the a. shop policy b. shop regulations c. shop procedure d. shop system

c

Ch2 When bending down to lift something you should a. bend over with straight legs b. put your feet together c. bend your knees d. bend your back

c

Ch2 Which of the following works towards finding the most effective ways to help prevent worker fatalities and workplace injuries and illnesses a. EPA b. FDA c. OSHA d. ASA

c

Ch5 All of the following statements describing the basic principles of electricity are true EXCEPT a. an atom with less deficiency of electrons than protons has an overall positive charge and is called a positive ion b. an atom with more electrons than protons has an overall negative charge and is called a negative ion c. a positive ion exerts a repelling force on the extra electron d. the flow of electrons from atom to atom is called current flow

c

Ch 15 Which of the following components converts some of the mechanical energy of the engine into electrical energy to supply electric current to all of the electrical components of the vehicle a. battery b. voltage regulator c. transformer d. alternator

d

ADV Ch 10 All of the following may affect gauge operation EXCEPT a. Open circuit from source voltage b. High resistance at the sensor ground c. Open circuit in the gauge balance or heating coil d. Gauge illumination bulb or LED has failed

d

ADV Ch 11 The DSO uses which type of test lead a. Only + lead, similar to DMM lead b. Only - lead, similar to DMM lead c. Color-coded DMM type leads so they are not confused with - or + d. A lead with a BNC type connector

d

ADV Ch 15 All of the following may affect SRS operation EXCEPT a. Faulty impact sensor b. SRS wiring harness short to ground c. Airbag squib open circuit d. The impact sensor data cannot be sent over the CAN system

d

ADV Ch 16 Which of these factors does the voice learning function address a. Ambient noise from traffic b. Other conversations in the vehicle c. Noise from the HVAC blower motor d. The customers speech pattern

d

ADV Ch 5 All of the following statements are true EXCEPT a. Wiring diagrams are essentially a map of all electrical components and their connections b. Wiring diagrams play an important role in diagnostic strategy c. Wiring diagrams help you know where the component is located on the vehicle d. A single wiring diagram of the whole vehicle would be helpful and easy to read

d

ADV Ch 6 All of the following statements with respect to the use of DMM in circuit diagnosis are true EXCEPT a. Measuring source voltage is the first inspection point of any electrical system concern b. The DMM on the volt setting is measuring the difference in voltage between the positive test lead and the negative test lead c. Measuring available voltage and voltage drop in the circuit are performed as part of the diagnostic process d. The DMM voltage circuit in simple terms takes the voltage measured on the negative lead and subtracts it from the positive lead

d

ADV Ch 7 All of the following can cause a relay to fail EXCEPT a. Coil has more than 10K ohms of resistance b. Coil has less than 3 ohms of resistance c. Switch contacts have 80 ohms of resistance d. Switch contacts have continuity

d

Ch 13 Automotive battery capacity is rated based on all of the following EXCEPT a. CCA (cold cranking amps) b. CA (cranking amps) c. RC (reserve capacity) d. plate type of the battery

d

Ch 13 which of the following batteries are most suited for off-road and all terrain vehicles a. low maintenance batteries b. lead acid batteries c. lithium ion batteries d. absorbed glass mat batteries

d