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Engineering Principles > Electrical Module > Flashcards

Electrical Module Flashcards

1
Q

What is the equation for Ohm’s Law?

A

V=IR

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2
Q

What is the equation for finding the equivalent resistance for a series circuit?

A

Req = R1+R1+R3…

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3
Q

What is the equation for finding the equivalent of resistance for a parallel circuit?

A

1/Req = 1/R1+1/R2+1/R3+…

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4
Q

For resistors in series, the current through each resistor is __________.

A

The same for each resistor and is equal to the total resistance of the circuit.

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5
Q

For resistors in parallel, the current through each resistor __________.

A

depends on the resistance of the resistor. It’s different for resistors of different values.

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6
Q

For resistors in parallel, the voltage across each resistor ________.

A

Is the same as the voltage of the battery.

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7
Q

For a series circuit, the voltage across each resistor ______.

A

depends on the resistance value of the resistor.

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8
Q

When measuring the current in a circuit, the ammeter (or multimeter) must be connected to the circuit in ______.

A

series

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9
Q

When measuring the voltage across a resistor, the voltmeter (or multimeter) must be connected in ______.

A

parallel

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10
Q

The FM in FM radio stands for ____________.

A

Frequency Modulation

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11
Q

The AM in AM radio stands for _______.

A

Amplitude Modulation

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12
Q

The number of cycles per second is called ________.

A

frequency

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13
Q

The maximum height of an electromagnetic wave is called the ________.

A

amplitude

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14
Q

Because it’s less susceptible to signal loss, ____ is better at broadcasting music.

A

FM

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15
Q

A primary limitation of an FM radio station is its ____.

A

relatively limited coverage area compared to AM radio.

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16
Q

FM signals are primarily _____________, meaning they travel in straight paths and thus are limited by obstacles such as buildings and mountains.

A

line-of-sight

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17
Q

One of the most well-known advantages of AM radio is its _____.

A

wider coverage area.

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18
Q

Compare the pros/cons of AM and FM radio signals.

A

AM signals can reach longer distances but have low sound quality and can be disrupted by electrical equipment or atmospheric conditions.
FM signals have high quality but can only travel short distances therefore need more equipment.

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19
Q

Types of Mechanical Energy are ___________.

A

Kinetic Energy (motion)
Gravitational Potential Energy (height difference)
Spring Potential Energy (Energy stored in a spring)

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20
Q

A common definition of Mechanical Energy is ___________

A

the ability to do work.

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21
Q

The physics definition of work is ___________.

A

A force that causes something to move parallel (or antiparallel) to the direction of the force.

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22
Q

What does RMF stand for?

A

Rotating Magnetic Field

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23
Q

There are two types of current. AC and DC. What does AC and DC stand for?

A

AC is alternating current.
DC is direct current.

24
Q

Examples of electronic devices that use DC are:

A

Cell phones
flashlights
toys

25
Q

Houses and schools are wired using _____

A

AC current

26
Q

Some benefits of AC current are ____.

A
  • transmitted over long distances
  • voltage can be varied using transformers
27
Q

In computers, RAM stands for:

A

Random Access Memory

28
Q

In computers, ROM stands for:

A

Read Only Memory

29
Q

In computers, FIFO stands for:

A

First In First Out

30
Q

How is FIFO used in computers?

A

Data that is First In, gets processed first and will then be the FIrst Out.

31
Q

These are internal hardware components of a computer.

A

Hard drive
Motherboard
Cooling fan
Power supply

32
Q

These are peripheral components of a computer.

A

Keyboard
Mouse
Monitor
Printer

33
Q

The Motherboard of a computer contains:

A

CPU
RAM Memory
Graphics Card
Sound Card
Connection Sockets

34
Q

CPU stands for:

A

Central Processing Unit

35
Q

The CPU is known as the _________of a computer

A

Brain

36
Q

A computer’s CPU generates lots of heat. How it that heat dissapated?

A

By using a heat sink and small fan located near the CPU.

37
Q

What are the two types of hard drives?

A

HDD - Hard Disk Drive is a mechanical drive
SSD - Solid State Drive is a digital drive.

38
Q

Which type of hard drive is more efficient?

A

SSD - Solid State Drive. Since there are no/few mechanical parts, these drives last longer and transfer data faster than HDD.

39
Q

What is a GPU?

A

Graphics Processing Unit. Also known as a graphics card. This allows the computer to generate and display complex graphics such as video games.

40
Q

The disk drive memory is known as the _________ memory.

A

secondary

41
Q

RAM is called the _____________ memory.

A

main

42
Q

Computer programs are also known as ________.

A

software

43
Q

A potentiometer is also known as a

A

variable resistor

44
Q

What are some common uses for potentiometers?

A

Volume dial
Dimmer switch

45
Q

Ultrasonic sensors are also known as:

A

Motion sensor

46
Q

How do ultrasonic sensors work?

A

They send out an ultrasonic pulse and measures the time it takes for the pulse to be reflected back.

47
Q

What is does a shaft encode do?

A

It supplies the speed, direction and position of a motor shaft.

48
Q

What does a gyroscopic sensor do?

A

It detects and maintains the angular velocity of a spinning rotor.

49
Q

What does an accelerometer do?

A

It measures the acceleration of an object in all 3 dimensions.

50
Q

What is the unit for frequency?

A

Hertz (Hz)

51
Q

What is the unit for linear acceleration?

A

m/s^2

52
Q

What are the units for angular velocity?

A

rpm (revolutions per minute) or
rad/s (radians per second)

53
Q

Efficiency

A

Energy out/Energy in

54
Q

An OR gate will return True when

A

Either or both of the inputs in True.

55
Q

An AND gate will return True when

A

Both of the inputs are True.

56
Q

A NOR gate will return True when

A

Either or both of the inputs are False.

57
Q

An XOR gate will return True when

A

One or the other, but not both, of the inputs are True.

Engineering Principles (11 decks)

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