Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

CE Exam MARCH CYCLE > Electical Theory > Flashcards

Electical Theory Flashcards

1
Q

Which of the following is the correct unit of measurement for current?

A

Amp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Opposition to current flow best describes which of the following terms?

A

Resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Nucleus of the atom contains what type of charge?

A

Positive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Uniform movement of electrons in a specific direction is know as what?

A

Current flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How many electrons in a valence rings is called a good conductor?

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which of the following has no effect on current?

A

Magnetism WRONG

Air pressure RIGHT

Heat WRONG

Fluctuate WRING

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which of the following statements is true?

A

A. Current is inversely proportional to resistance. (Correct)

B. Current is inversely proportional to voltage

C. Smaller the conductor, the least resistance to current flow.

D. As temperature of conductor rises, resistance decreases.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How does a battery produce direct current?

A

Chemical energy to electrical energy!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is another name for secondary cell batteries?

A

Accumulators

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Conductor must be moved in what direction to produce electricity in a dc generator?

A

Perpendicular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

(True or false) DC is a constant output that does not vary with respect to time?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What type of test is utilized to measure AC current in a sine wave format?

A

Oscilloscope

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What term is utilized when the amount of voltage reaches the maximum positive position on sine wave?

A

Peak value

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Effective value is also know as?

A

RMS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How long does it take to complete one continuous sine wave?

A

0.25 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which of the following principals does an AC generator used to generate current?

A

Electromagnetic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

When a conductor is formed into a cool it becomes which of the following electrical items?

A

Inductor (Correct)

Capacitor

Diode

Transistor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the symbol of inductance?

A

L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How many stages does a capacitor perform?

A

4 stages

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What unit of measurement is used for capacitance?

A

Farad

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is defined as the total opposition to flow in a AC circuit?

A

Impedance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

True or false. Apparent power is the voltage times the current in any circuit?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Which type of electrical equipment used for over current protection?

A

Circuit breaker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What type of charged particles are associated with electrons?

A

Neagtive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Which of the following is NOT part of a standard battery?

A

Positive electrode

Gap suppressor (correct)

Negative electrode

Electrolyte

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

This electrical term is described as the pushing force behind electricity.

A

Voltage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Voltage may also be referred to as ?

A

Difference of potential

Electromotive force (EMF)

Electrical pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What letter represents voltage in a formula?

A

E

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

How is voltage calculated in a formula?

A

By multiplying current and resistance.

E = I x R

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What is unit of measurement for voltage?

A

Volt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

This electrical term is described as the actual movement of electrons through the conductor.

32
Q

What is unit of measurement for current?

33
Q

What letter is used for current in a formula?

34
Q

How is current calculated?

A

Current is calculated by dividing voltage by resistance.

I = E x R

35
Q

This electrical term is described as the opposition to current flow.

A

Resistance

36
Q

Materials with little resistance are knows as?

A

Conductors

37
Q

Materials with high resistance is know as?

A

Insulators

38
Q

What is the unit of measurement for ohms?

A

The OHMs symbol

39
Q

What letter represents resistance in a formula?

40
Q

How is resistance calculated?

41
Q

Calculation of voltage per ohms law is accomplished by using what formula?

42
Q

This electrical term is described as the rate at which work is done, or the usable electricity produced or consumed.

43
Q

What is the unit of measurement for power?

44
Q

How is wattage calculated?

A

By multiplying volts and amperes; Thai formula is also know as the power law. Formula P= E x I

45
Q

Describe direct current.

A

Current flowing in only one direction, the current flows from negative to positive.

46
Q

Describe alternating current.

A

It’s is called AC because it changed directions. An AC cycle is made up of one positive and one negative alternation. AC flows one way for the cycle then the other way for half the cycle.

47
Q

What are know as the smallest building blocks of matter?

48
Q

How much weight does the nucleus account for the atom?

49
Q

What are protons?

A

Protons are positively charged

Atomic number of the atom is equal to the number of protons

Atoms have the same number of protons and electrons; making atoms electrically neutral

50
Q

What is a Neuton?

A

Neuton has no charge, which makes is neutrals

51
Q

What are electrons?

A

Electrons are negatively charged particles.

Electrons are arranged in energy levels called shells or rings.

52
Q

When atoms share atoms what is that known as?

A

Covalent bonding.

53
Q

Electrically charged atoms are called?

54
Q

What is the valence ring and what does it determine?

A

The outermost ring and it determines is the atom is going to be a insulator it conductor.

55
Q

Valence ring with 2 electrons is going to be what?

A

Conductor. Cause it allows other electors to pass through easily.

56
Q

Valence ring with 7 to 8 electrons is going to be a what?

57
Q

Valence ring with 4 to 5 electrons is going to be known as a what?

A

Semi conductor.

58
Q

Current flow has how many effects and what are they?

A

4

Magnetism, heat, chemical action, and physical shock

59
Q

Under certain circumstances, as little as ______ amperes could stop your heart.

A

0.1 amperes

60
Q

If voltage is increased what will happen to current?

A

It will increase to.

61
Q

If resistance is increased what will happen to the voltage?

A

It will decrease and so will the current.

62
Q

Most common source of DC?

63
Q

In order to create electricity with a generator you will need?

A

A conductor, magnetic field, and a relative motion.

64
Q

This value is simply the value of the sine wave at any given point in time

A

Instantaneous

65
Q

This value in a AC is the average of all the instantaneous values during one alternation.

A

Average value

66
Q

What does RMS stand for?

A

Root mean square

67
Q

What is the unit of measurement for frequency?

68
Q

How does a generator work?

A

It converts mechanical energy to electrical energy

69
Q

What is the rotating section of the the generator called?

70
Q

What is the stationary section of a generator called?

71
Q

What does a single phase generator consist of?

A

Consist of one conductor and one magnetic field

72
Q

What are the four stages of a capacitor?

A

Charging, charged, discharging, and discharged.

73
Q

What units is capacitance measured in?

74
Q

What circuit is defined as two or more units of resistance connected end to end to form only one path for current flow and an AC or DC voltage source?

A

Series circuit

75
Q

What circuit is defined as having more than one current path connected to a common voltage source?

A

Parallel circuit

76
Q

A parallel circuit must contain at least how many paths for current flow?

CE Exam MARCH CYCLE (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions