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AS114-4H-Basic Electricity III-A1-MC(Basics) > AS108-3 Review-1 > Flashcards

AS108-3 Review-1 Flashcards

1
Q

What electrical component is used to convert alternating current to pulsating direct current?

A

Rectifier

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2
Q

What are the two most common materials used as the base material in semiconductor components?

A

Silicon and germanium

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3
Q

What is the polarity of a diode’s anode?

A

Positive

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4
Q

What is the polarity of a diode’s cathode?

A

Negative

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5
Q

What polarities should a diode be connected to in a circuit in order for the diode to conduct electrical current?

A

Anode- Forward Biased Cathode-Reversed Biased

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6
Q

What is it called when a diode is connected into an electrical circuit so it will conduct current?

A

Forward Bias

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7
Q

What polarities should a diode be connected to in a circuit in order for the diode to block electrical current?

A

Anode- Reversed
Cathode- Forward

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8
Q

What is it called when a diode is connected into an electrical circuit so it will block current?

A

Reverse Bias

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9
Q

What is another name for a diode?

A
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10
Q

If you connect the red lead of an ohmmeter to the anode of a diode and the black lead to the cathode, what should the meter read?

A

Diodes High Resistance

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11
Q

If you connect the red lead of an ohmmeter to the cathode of a diode and the black lead to the anode, what should the meter read?

A

OL

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12
Q

What is the problem with the diode if the ohmmeter reads very low or zero resistance in both directions?

A

Partial Short

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13
Q

What is the problem with the diode if the ohmmeter reads very high or infinite resistance in both directions?

A

Open circuit

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14
Q

What are zener diodes most often used for in electronic circuits?

A

Voltage Regulator

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15
Q

What is special about an LED that is NOT true about other diodes?

A

It is the only Diode to emit Light

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16
Q

Name the diode type shown below AND label the anode and cathode.

A

Type: Zener

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17
Q

Name the diode type shown below AND label the anode and cathode.

A

Type: LED

18
Q

Name the diode type shown below AND label the anode and cathode.

A
19
Q

Name the transistor shown AND label the leads.

A

Type: PNP

20
Q

Name the transistor shown AND label the leads.

A

Type: NPN

21
Q

What polarities should an NPN transistor be connected to in a circuit in order for the transistor to allow electrical current from emitter to collector?

A

Base- Positive
Emitter- Negative

22
Q

What polarities should an PNP transistor be connected to in a circuit in order for the transistor to allow electrical current from emitter to collector?

A

Base- Negative
Emitter- Positive

23
Q

What is the problem with a transistor if an ohmmeter reads very high resistance between the collector and emitter even when the proper polarities are connected between base and emitter?

A
24
Q

What is the problem with a transistor if an ohmmeter reads very low resistance between the collector and emitter regardless of what polarities are connected to the base and emitter?

A
25
Q

What point in the circuit is considered to be a zero voltage reference?

A

Ground

26
Q

What type of circuit fault is characterized by a break in the circuit?

A

Open Circuit

27
Q

What type of circuit fault is characterized by current bypassing all or some of the electrical load in the circuit

A

Short

28
Q

What type of circuit fault is characterized by there being a voltage drop where there should not be a voltage drop?

A

Added Resistance

29
Q

If there is system voltage across two points and there are no other voltage drops in the circuit, what type of fault does that indicate?

A

Partial Short

30
Q

If a voltmeter is placed across a light in a circuit, what should the voltmeter indicate if the power switch is open?

A

Zero

31
Q

If a voltmeter is placed across a switch and it reads 0 volts, what position is the switch in?

A

Switch is Open/Off

32
Q

If a voltmeter is placed across a circuit breaker or fuse and it reads 0 volts, what is the condition of the circuit breaker/fuse

A

Good

33
Q

If a voltmeter is placed across a circuit breaker or fuse and it reads system voltage, what is the condition on the circuit breaker/fuse?

A

Bad

34
Q

If a voltmeter is placed across a switch and it reads system voltage, what position is the switch in?

A

Closed/On

35
Q

If an ohmmeter is places across a light bulb and it is isolated from the rest of the circuit, what will the ohmmeter indicate?

A

Resistance of the Bulb

36
Q

Identify the following components:

A
  1. Light Bulb
    37.Master Switch
  2. _____________
    39.Fuse
  3. Relay
  4. Circuit Breaker
37
Q

42 Name the logic gate symbol shown and complete the logic chart.

A

AND

38
Q

43 Name the logic gate symbol shown and complete the logic chart.

A

OR

39
Q

44 Name the logic gate symbol shown and complete the logic chart.

A

XOR

40
Q

45 Name the logic gate symbol shown and complete the logic chart.

A

NAND

41
Q
  1. Name the logic gate symbol shown and complete the logic chart.
A

NOR

42
Q
  1. Name the logic gate symbol shown and complete the logic chart.
A

XNOR

AS114-4H-Basic Electricity III-A1-MC(Basics) (7 decks)

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