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Automotive (level 2) > Electrical Systems Basics > Flashcards

Electrical Systems Basics Flashcards

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1
Q

What is needed for Electricity to flow?

A

Excess of Electrons on one side, Lack of Electrons on other side & A Conductive Path connecting the 2 sides.

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2
Q

How many Electrons move per second in 1 amp?

A

6.24 Billion

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3
Q

What does a Capacitor do?

A

Stores Electricity

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4
Q

What acts as an electronic one-way check valve?

A

Diode

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5
Q

What does a Diode do?

A

It acts as an electronic one-way check valve

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6
Q

What Varies Voltage in a Circuit?

A

Potentiometer

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7
Q

What does a Potentiometer do?

A

It Varies Voltage in a Circuit

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8
Q

What is a solid state material that can act as a Insulator or Conductor ?

A

Semi-conductor

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9
Q

What is the unit of measurement for electrical current flow?

A

Amp

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10
Q

What is the unit of measurement for electrical pressure?

A

Volt

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11
Q

What is the unit of measurement for electrical resistance?

A

Ohm

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12
Q

Define Current Draw

A

The amount of current required to operate a load.

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13
Q

What type of meter is used only in a circuit that has no power?

A

Ohmmeter

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14
Q

What is the name for a circuit where there is a break in the path of electrical flow?

A

Open Circuit

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15
Q

What is the name for a circuit where current goes directly to ground?

A

Grounded Circuit

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16
Q

What is the name for a circuit that has a complete path provided for electrical flow?

A

Closed Circuit

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17
Q

“Voltage drops across each Resistance” is a law for what Circuit?

A

Series Circuits

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18
Q

“Total Resistance is the sum of all Individual Resistances” is a law for what Circuit?

A

Series Circuits

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19
Q

“The sum of each individual Voltage Drop is equal to the source Voltage” is a law for what Circuit?

A

Series Circuits

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20
Q

“Voltage applied to each leg is the same” is a law for what Circuit?

A

Parallel Circuits

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21
Q

“Voltage drop at each branch is the same” is a law for what Circuit?

A

Parallel Circuits

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22
Q

“Resistance Total is less then the Resistance in the lowest branch” is a law for what Circuit?

A

Parallel Circuits

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23
Q

“Current total is all branches combined” is a law for what Circuit?

A

Parallel Circuits

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24
Q

“Current depends in resistance size” is a law for what Circuit?

A

Parallel Circuits

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25
Q

what is 1 ohm into Micro ohms?

A

0.000,0001µΩ

26
Q

what is 1 ohm into Milli ohms?

A

0.001mΩ

27
Q

what is 1ohm into Kilo ohms?

A

1,000KΩ

28
Q

what is 1 ohm into Mega ohms?

A

1,000,000MΩ

29
Q

Order all unit sizes from smallest to largest

A

Micro, Milli, Base, Kilo, Mega

30
Q

What Relay pin(s) are connected to power supply?

A

Pin 30

31
Q

What Relay pin(s) act as a activation switch?

A

Pin 85 and 86

32
Q

What Relay pin(s) feed the component?

A

Pin 87

33
Q

When do you measure Resistance?

A

on a dead circuit (no power)

34
Q

A PNP Transistor is __________ Bias.

A

Forward

35
Q

A NPN Transistor is __________ Bias.

A

Reverse

36
Q

How many Volts to open a Transistor?

A

0.5v to 0.7v

37
Q

What charge is an Anode?

A

Positive

38
Q

What charge is a Cathode?

A

Negative

39
Q

What are the Resistance Value on a CAN bus?

A

80Ω

40
Q

What is the base voltage on a CAN bus?

A

2.5v

41
Q

What is the range of Voltage on a CAN bus High?

A

2.5v to 3.5v

42
Q

What is the range of Voltage on a CAN bus low?

A

1.5v to 2.5v

43
Q

What is the CAN bus high pin on OBDII?

A

Pin 6

44
Q

What is the CAN bus low pin on OBDII?

A

Pin 14

45
Q

What is created from Induction?

A

Electromotive Force (Voltage)

46
Q

what would happen to Current Flow by adding a load in parallel to a parallel circuit?

A

Increase

47
Q

What is the purpose of a gateway module?

A

to translate signals

48
Q

What is the magnetic field generated from north and south poles?

A

Flux Field

49
Q
A
50
Q

What is reluctance?

A

The resistance to a magnetic field

51
Q

why are resistors found in relays?

A

to eliminate high voltage spikes

52
Q

How does current act in a series circuit?

A

Stays Constant throughout the entire circuit

53
Q

What is stated in Ohms Law?

A

Current is directly proportional to Voltage & inversely proportional to resistance

54
Q

What are the 3 parts of a Transistor?

A

Emitter, Base & Collector

55
Q

What is the High Current side of a Transistor?

A

Emitter

56
Q

What is the Low Current side of a Transistor?

A

Collector

57
Q

What does the middle letter define on a Transistor (PNP vs NPN)

A

Charge required at base
(PNP is Negative / NPN is Positive)

58
Q

what does the RMS rating mean for A/C power?

A

The amount of usable energy

59
Q

What Circuit Protection device is normally found near the battery?

A

Fusible Link

60
Q

What is a Substance (found in nature) with inherit magnetic properties called?

A

Magnetite

Automotive (level 2) (13 decks)

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