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313D Refrigeration Training > 313D Electrical Exam (complete) > Flashcards

313D Electrical Exam (complete) Flashcards

Electrical

1
Q

If the total voltage drop in a circuit does not equal the applied voltage?

A

Poor wire connection

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2
Q

A blackened fuse indicates?

A

Short Circuit

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3
Q

The total resistance in a parallel circuit?

A

Will be lower than the lowest resistance

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4
Q

If the current through a conductor increases, the magnetic field around the conductor will?

A

Increase

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5
Q

A fuse that is good will have a resistance of?

A

A measurable resistance

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6
Q

A blown fuse will have a reading of?

A

Infinity(OL)

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7
Q

Four Resisters are connected in Parellel, the current flow will be highest through which resistor?
1. 3 Ohms
2. 5 Ohms
3. 7 Ohms
4. 9 Ohms

A

3 Ohms

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8
Q

The value of two 5 MFD Capacitors connected in Parellel are?

A

10 MFD

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9
Q

The value of two 5MFD Capacitors connected in series is?

A

2.5 MFD

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10
Q

The value of two 20 Ohm resistors in parellel is

A

10 Ohms

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11
Q

The value of two 20 ohms resistors in series is?

A

40 Ohms

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12
Q

The ohm reading across a closed switch should be?

A

0 Ohms

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13
Q

The voltage reading across an open switch should be?

A

The applied voltage

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14
Q

Which conductor has the largest cross section or diameter?
1. #10
2. #12
3. #18
4. #14

AWG

A

10

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14
Q

14awg wire is rated to carry____ amps max?

A

15

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14
Q

10 awg wire is rated to carry____ amps max?

A

30

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15
Q

How many conductors can be wrapped around a screw terminal on a switch or receptacle?

A

One

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16
Q

What is the minimum distance that conductors must extend into a junction box?

A

6”

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17
Q

If using an analog Ohmeter and the needle points to the symbol “0” what does this indicate?

A

Measurable resistance

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18
Q

If using an analog ohmmeter and the needle points to (8) symbol what does this indicate?

A

Open circuit

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19
Q

When using an analog voltmeter to measure an unknown votage, what range should your meter be set to?

A

0-750 V

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20
Q

If using an analog voltmeter to what should you set your meter scale to on a 120 volt circuit?

A

0-125 V

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21
Q

If the resistance remains constant in a circuit, and the voltage goes down, what will the remaining amperage do?

A

Go down

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22
Q

If the amperage remains constant in a circuit, and the resistance goes down, what will the voltage do?

A

Decrease

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23
Q

If the voltage remains constant, and the resistance goes down, what will the amperage do?

A

Go up

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24
Q

A contactor resembles?

A

A relay

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25
Q

Transformer output is measured in what units?

A

VA Volt-amps

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26
Q

A 120 volt primary and a 24 secondary, would be considered what type of transformer?

A

Step down

27
Q

The neutral connections on a receptacle are attached to what color terminal?

A

Silver

28
Q

The hot connections on a receptacle are attched at what color terminal?

A

Gold

29
Q

Potential is another term used for?

A

Voltage

30
Q

How many BTU’s are there in 10,000 W(10kW) of power?

A

34,100

31
Q

How many BTU’s are there in 1 watt of power?

A

3.41

32
Q

Voltage may also be expressed as

A

Electromotive force

33
Q

When measuring parellel circuit amperage

A

Use an ammeter in Series with the load

34
Q

When measuring a parellel circuit voltage

A

Use a voltmeter in parellel with the load

35
Q

When measuring series circuit amperage?

A

Use an ammeter in series with the load

36
Q

In a series circuit…?

A

There is one path for current to flow

37
Q

The number of watts an appliance is using is obtained by?

A

Multiplying the voltage and amperage used by the appliance

38
Q

Resistance is measured in?

A

Ohms

39
Q

Amperage is measured in?

A

Amperes

40
Q

Voltage is measured in?

A

Volts

41
Q

Power is measured in?

A

Watts

42
Q

How many watts are in one horsepower?

A

746

43
Q

In the E,I,R triangle (Ohm’s Law) the ‘R’ represents?

A

Resistance

44
Q

In the E,I,R triangle the ‘I’ represents?

A

Amperage

45
Q

In the E,I,R triangle the ‘E’ represents?

A

Voltage

46
Q

Resistance in an electrical circuit is compared to what in a water piping system?

A

Resistance ex pipe size

47
Q

Amperage in an electrical circuit is compared to what in a water piping system?

A

Flow

48
Q

Voltage in an electrical circuit is compared to what in a water piping system?

A

Pressure

49
Q

What devices are used in the circuit for amperage protection?

A

Fuses

50
Q

How many Milliamps are found in 1 ampere?

A

1000

51
Q

A kilovolt has how many volts?

A

1000

52
Q

How many millivolts are there in a volt?

A

1000

53
Q

The simple electrical circuit consist of?

A

Conductors, load,energy source

54
Q

Rubber, glass and wood are good?

A

Insulators

55
Q

Atoms are electrically neutral when they contain the same number of?

A

Protons and electrons

56
Q

Copper and aluminum are good..?

A

Conductors

57
Q

What are the three components that make up atoms?

A

Electrons, protons, neutrons

58
Q

What is the term used to indicate that equipment is safe to be worked on?

A

The “Zero” mechanical state

59
Q

After a lock is installed on equipment being serviced, who can remove the lock?

A

The person who installed the lock

60
Q

What is the minimum sized bonding cable that can be used to bond the electrical system to the water supply?

A

6 Gauge

61
Q

What must be marked on the electrical distribution panel when installing a breaker?

A

The name of the appliance served by the breaker

62
Q

What is the minimum distance electrical equipment can be installed from a gas regulator?

A

36”

63
Q

When a co-worker is being shocked, what is the most important rule to remember?

A

Disconnect power to circuit

64
Q

The main factors affecting electrical shock are?

A

Amount of current, amount of voltage, condition of skin,

65
Q

The main concern with static electricity is?

A

Arcing

66
Q

A fuse that is blown will have a resistance reading of?

A

Infinity (OL)

313D Refrigeration Training (10 decks)

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