electrical automotive
Thermistor is a temperature variable Transistor
False its a temperature variable resistor
The different names for legs of a diode are emitter, base, and collector ?
False those are the legs for a transistor
What's another name for reprogramming the computer ?
Flashing
Why is an integrated circuit described as the foundation of computerized engine control systems ?
It is a small package with many functions
Postive and Negative plates and Electrolyte become what when fully discharged ?
PbSo4 and H2O
What defines difference in communication protocols ?
Speed and operation
KHz is the unit for a. frequency b. volts c. amps d. power
a. frequency
Repel is ____ force to attract a. greater b. smaller c. equal to d. irellavent
a. greater
How long does it take for a conventional tungsten filament bulb to reach full brightness ? a. 20ms b. 200ms c. 2000ms d. 80s
b. 200ms
What rate is the best for the battery to charge ? a. 80a b. 12a c. 10a d. 5 a
c. 10a is the best rate to charge a battery
Which logic gate acts like two switches wired in parallel ? a. AND b. NOT c. NOR d. OR
d. OR
Which of the following are circuit faults ? a. short circuit b. open circuit c. high resistance circuit d. all of the above
d. all of the above are common circuit faults
You should handle bulbs by the following a. bulb b. harness c. wires d. base
d. base, you shouldn't hold by the bulb the oil may cause the bulb to burn out
How should an ohm meter be connected to a component ? a. only in parallel b. only when current is not flowing c. in series with current flowing d. both a and b
d. both a and b only in parallel when no current flowing
Reserve capacity is the rating for batteries
# of minutes for which battery can produce 25 A and still have a battery voltage of 1.75 V per cell
Computers can receive and process both analog and digital binary signals ?
False
The instrument panel warning light is called a DTC ?
False
Cells are constructed of positive and negative plates with
Insulating seperators between each plate
Whats another name for central processing unit ?
Microprocessor
What kind of device is an engine coolant temperature sensor an example of ?
Thermistor
A multiplex wiring system uses a serial data bus to connect different computers or control modules together ?
True
AGM batteries require a different kind of charger True or False ?
True
CPU is thousands of transistors placed on a small chip ?
True
Some common semiconductor materials include silicon and germanium ?
True
Wheatstone bridge may be used as a variable resistance sensor?
True
Which electronic device is made up of four resistors connected in series parallel ?
Wheatstone bridge
What is required for current to flow through a diode ? a. + connected to + side of circuit b. minimum of 2.7V c. minimum of 5.1V d. + connected to - side of circuit
a. + connected to + side
CCA in automotive stands for? a. Cold cranking amps b. Current closing action c. Cold closing amps d. Current cranking amps
a. Cold cranking amps
Which of the following is a simple semi conductor ? a. diode b. solenoid c. microprocessor d. transistor
a. diode
When parking break is on which of the following is true ? a. drl turn off b. headlights turn off c. courtesy lights turn on d. high beams turn on
a. drl turn off
What is the most common type of sealed beam headlight used today ? a. halogen b. hid c. xenon d. led
a. halogen
LED is often used in headlights because of a. longer operating life b. higher current usage c. more natural colour d. sharper light
a. longer operating life
Fog lights are designed to work with the following a. low beams b. high beams c. auxiliary lights d. tail lights
a. low beams
When selecting meter accuracy ratings the ________ the rating the more precise the meter a. lower b. higher
a. lower
Which of the following is a unit of capacitance ? a. coulomb b. farad c. gauss d. hertz
b. farad
Which of the following bulbs are used in clusters? a. halogen b. led c. hid d. xenon
b. led lights are used in clusters
Which of the following uses the principle of magnetic induction to produce a voltage signal ? a. Timing disc b. Magnetic pulse generator c. Pickup coil d. A/D converter
b. magnetic pulse generator
What are semi conductors made of ? a. gallium b. silicon c. copper d. aluminum
b. silicon
How many volts required to start hid headlights ? a. 150V b. 1500V c. 15000V d. 80V
c. 15000V
A high impedance meter has ? a. low internal resistance b. high internal voltage c. high internal resistance d. low internal current
c. high internal resistance
Which of the following is made of a semi conductor material ? a. pm generator b. plastic wiring insulation c. led d. zener diode
c. led
Which semi conductor device is found @ the heart of an electronic voltage regulator ? a. LED b. Dielectric c. zener diode d. transistor
c. zener diode
In an open circuit which of the following exists a. very high resistance b. no current c. no voltage d. both a and b
d. both a and b voltage exists up to the point of the open
When working on a hybrid vehicle what kind of meter should be used ? a. cat I or catII b. cat III c. cat IV d. cat III or cat IV
d. cat III or cat IV cat III is the minimum to use on a hybrid vehicle
What can illuminate high beam headlights even with the switch off? a. dimmer switch b. automatic switch c. stereo control d. flash to pass
d. flash to pass
which of the following may cause headlights to flicker ? a. a faulty connection b. low voltage c. low current d. poor ground
d. poor ground may cause headlights to flicker
What does a magnetic pulse generator that produces voltage signals inform the computer about ? a. power b. sequrity c. timing d. speed
d. speed
Which of the following is an advantage of using fluorescent lamps ? a. cost b. compact c. brightness d. use less energy
d. use less energy
Lead acid battery normally has ____V per cell
2.1V per cell
Normal battery drain is usually...
20-30mA
Initial charge rate should be about _______ for 30 minutes and battery temperature should not exceed _______
35A , 150 Deg F ( Hot to touch )