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STA > Electrics (and other) > Flashcards

Electrics (and other) Flashcards

1
Q

What does DISS mean?

A

Direct information system services

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2
Q

Where are hazardous substances disposal instructions found ?

A

COSHH cabinet COSHH instructions with each substance

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3
Q

What does DTI mean ?

A

dial test indicator

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4
Q

what is a complete revolution of a DTI ?

A

1mm

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5
Q

How do you save a warranty write up on ODIS?

A

long protocol

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6
Q

what does 30 mean on a CFD?

A

live

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7
Q

what does 15 mean on a CFD?

A

ignition live even during cranking

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8
Q

what does 75x mean on a CFD?

A

ignition live except during cranking

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9
Q

what does 31 mean on a CFD?

A

Earth

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10
Q

How do you diagnose open circuit faults ?

A

probe with the positive lead and earth lead on battery

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11
Q

How do you diagnose resistive faults ?

A

probe with the positive lead and earth lead on battery

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12
Q

how do you diagnose short circuit faults ?

A

probe using negative lead and positive lead on battery

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13
Q

will the fuse blow in an open circuit ?

A

no unless its caused by other fault

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14
Q

will fuse blow in resistive circuit ?

A

no

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15
Q

will fuse blow in short circuit ?

A

yes

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16
Q

what are the symptoms of an open circuit ?

A

not working

17
Q

what are the symptoms of a resistive circuit?

A

dim/slow

18
Q

what are the symptoms of a short circuit ?

A

not working

19
Q

What is the primary side of a relay ?

A

85 in 86 out

20
Q

what current runs through the primary side of a relay ?

A

low current

21
Q

what is the secondary side of a relay ?

A

30 in 87 out

22
Q

what current runs through the secondary side of a relay ?

A

high current

23
Q

how do you measure resistance of a consumer ?

A

disconnect consumer from circuit and measure in ohms

24
Q

how do you measure amps ?

A

connect amp meter in series so all current passes through the amp meter

25
Q

how do you measure volts ?

A

connect volt meter in parallel or use circuit breaker

26
Q

What does COSHH mean

A

Control of substance hazardous to health

STA (4 decks)

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