Q2 Flashcards

1
Q

C and C stand for

A

Control and Communications

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2
Q

Whats a converted supply

A

Frequency changed from 450v 60Hz

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3
Q

What are the voltages in a C+C switchboard

A

24V
115v, 400Hz

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4
Q

What and where are earth testing facilities for 24v DC

A

Earth test panel on switchboard
And push button with integral lamp is fitted

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5
Q

TRU stand for

A

Transformer rectifier unit

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6
Q

RTR stand for

A

Rationalised transformer rectifier

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7
Q

2 battery categories

A

Primary and secondary

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8
Q

Characteristics of batteries

A

Primary - dry, non rechargeable, small, throw them away

Secondary - wet, rechargeable, vary in size

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9
Q

Capacity of batteries measured in?

A

Amphour

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10
Q

Voltage of a fully charged cell

A

2.1v

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11
Q

Voltage if a discharged cell

A

1.75v

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