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(Generals)Basic Electricity I > Basic Electricity 1 Study Guide > Flashcards

Basic Electricity 1 Study Guide Flashcards

1
Q
  1. What are valence electrons?
A

Outer shell

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2
Q
  1. Materials that have 5 or more valence electrons are known as what?
A

Insulator

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3
Q
  1. Materials that have less than 4 valence electrons are known as what?
A

Conductor

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4
Q
  1. Actual current flow is from
A

Negative to Positive.

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4
Q
  1. The conventional theory says electricity flows from
A

Positive to Negative.

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5
Q
  1. What is E.M.F.?
A

Electromotive Force

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6
Q
  1. What is E.M.F. measured in?
A

Voltage

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7
Q
  1. What letter is used to represent voltage (E.M.F.)?
A

E

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8
Q
  1. Current is defined as?
A

Flow of electron

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9
Q
  1. Current is measured in what unit?
A

Amps

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10
Q
  1. What letter is used to designate current?
A

I

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11
Q
  1. Resistance is defined as what?
A

Opposition to electron flow

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12
Q
  1. Resistance is measured in what?
A

Ohms

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13
Q
  1. Resistance is designated by what letter?
A

R

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14
Q
  1. Power is defined as what?
A

Work done in a circuit

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15
Q
  1. Power is measured in what?
A

Watts

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16
Q
  1. What letter is used to designate power?
A

P

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17
Q
  1. Convert .0056 volts to milli-volts.
A

5.6 kV

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18
Q
  1. Convert 24,175 ohms to kilo-ohms.
A

24.175k Ohms

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19
Q
  1. Convert 31.7 mega-ohms to ohms.
A

31,700,000 Ohms

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20
Q
  1. Convert 5.3 micro-amps to amps.
A

0.0000053m A

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21
Q
  1. What are the two formulas used to represent ohms’ law?
A

E=IR P=IE

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22
Q
  1. What voltage is required to push 3 amps through 800 ohms of resistance?
A

2400 V

23
Q
  1. How much resistance would be present in a 24 volt circuit with 4.8 amps of current?
A

5 Ohms

24
Q
  1. How much current would flow through a circuit having 50 kilo-ohms of resistance and 100 volts?
A

0.002 V

25
Q
  1. What is the power used by a circuit having 1.2 amps through 150 ohms of resistance?
A

216 W

26
Q
  1. What is the total power of a 24 volt circuit having four 1200 ohm resistors in series?
A

.12 W

27
Q
  1. What remains constant in a series circuit?
A

Current

28
Q
  1. What remains constant in a parallel circuit?
A

Voltage

29
Q
  1. The first band on a resistor designates what?
A

First significant digit

30
Q
  1. The second band on a resistor designates what?
A

Second significant digit

31
Q
  1. The third band on a resistor designates what?
A

Multiplier (number of zeros)

32
Q
  1. The fourth band on a resistor designates what?
A

Tolerance

33
Q
  1. If there is no fourth band, the resistor tolerance will be what?
A

+/- 20%

34
Q
  1. What would the value of a resistor with the following color code be; Green, Yellow, Red, Silver.
A

5400 Ohms +-10%

35
Q
  1. What would the value of a resistor with the following color code be; Blue, Brown, Grey, Gold.
A

6,200,000,000 +- 5%

36
Q
  1. Magnetic lines of flux will (go through, or go around) soft iron?
A

Go Through

37
Q
  1. Magnetic fields flow from
A

North to South

38
Q
  1. Static electricity will distribute evenly on Uniform surfaces, but will collect on
A

Rough surfaces.

39
Q
  1. What is the “left hand rule” for conductors?
A

Thumb - direction of electron flow / Fingers - direction of flux travel.

40
Q
  1. What is the “left hand rule” for coils?
A

Thumb - Points to north pole / Finger - Direction of electron flow.

41
Q
  1. A rheostat controls power by _________
    through a circuit.
A

Varying The Current

42
Q
  1. A potentiometer controls power by
    _______
    through a circuit.
A

Varying The Voltage

43
Q
  1. As the length of a wire increases, the resistance will
A

Increase

44
Q
  1. As the diameter of a wire increases, the resistance will
A

Decrease

45
Q
  1. What type of circuit breakers do aircraft have?
A

Push

46
Q
  1. Excessive Static charges can be eliminated on an aircraft in flight by the use of what?
A

Static Wick

47
Q
  1. Electromagnetic induction is when electricity is produced by moving a
A

Conductor Through A Line Of Magnetic Flux.

48
Q
  1. What is used to statically balance aircraft structures to the same electrical potential?
A

Bonding Strap

49
Q
  1. Kirchhoff’s voltage law means that if I have a 12 Volt battery in a circuit that the loads in the circuit will use a total of ____
    volts.
A

Zero

50
Q
  1. A voltmeter is connected into a circuit how?
A

Parallel

51
Q
  1. An ammeter is connected into a circuit how?
A

Series

51
Q
  1. What are the steps for connecting an ohmmeter in a circuit?
A

Power off, parallel, and isolated

52
Q
  1. What type of meter supplies its own power?
A

Ohmmeter

53
Q
  1. What is the purpose of the reflective strip on the face of an analog meter?
A

Act like a mirror for accurate reading view straight on.

(Generals)Basic Electricity I (13 decks)

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