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Power Gen Review > Lesson 7 Review > Flashcards

Lesson 7 Review Flashcards

1
Q

How do ALT/GEN convert mechanical energy into electrical energy?

A

Electromagnetic induction

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2
Q

How do you determine the FREQUENCY of an alternator?

A 
# of pole pairs
SPEED of rotation
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3
Q

An alternator with 2 PAIRS of field poles will produce how many complete cycles?

A

2

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4
Q

What are the 2 ways we can regulate output FREQ?

A

CSD (hydromechanical)

VSCF (SS)

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5
Q

High output BRUSHLESS alternators are also referred to as?

A

Generators

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6
Q

What is an IDG?

A

Integrated Drive Generator, combines CSD and ALTERNATOR

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7
Q

What is a CSD?

A

A hydro-mechanical trasnsmission driven by the EDG

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8
Q

What is the purpose of the CSD?

A

Takes the VARIABLE engine RPM and changes it to a CONSTANT RPM to drive the ALTERNATOR

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9
Q

An AC freq. of 400Hz is maintained by what?

A

CSD

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10
Q

How do we maintain a CSD?

A

Colour of oil

Content of oil

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11
Q

What is a VSCF? What does it produce?

A

Variable Speed Constant Freq.

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12
Q

What component produces Frequency Regulated, 3 phase AC form?

A

VSCF

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13
Q

What are the advantages of VSCF?

A

brushless ALT

less moving parts = reduced maintenance and weight

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14
Q

The primary source of electrical power on an M2 aircraft is what?

A

High Output Brushless ALT

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15
Q

What is the phase to ground AC produced?

A

115VAC

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16
Q

What is the phase to phase AC produced?

A

208VAC

17
Q

What component monitors and controls generator operation in one central control unit?

A

Generator Control Unit

18
Q

What are the 2 parts of a GCU?

A

Hot (power)

Ground (circuit return)

19
Q

What component utilizes the principles of electro-magentic induction?

A

Current Transformer

20
Q

What is the purpose of a current transformer?

A

Indirectly measures the amount of CURRENT in a conductor through INDUCTION into a SECONDARY conductor

21
Q

Signals from the current transformer are sent where?

A

GCU

22
Q

What are FEEDER FAULTS?

A

problems detected by the GCU

23
Q

What faults impacts the delivery of GEN output to the busses?

A

Feeder Faults

24
Q

This process of dropping non-essential busses is known as what?

A

LOAD SHEDDING

25
Q

What starts the induction process in the generator?

A

residual magnetism of the field windings

26
Q

The process of passing EXTERNAL CURRENT through the FIELD WINGING is called?

A

Flashing the Field

Power Gen Review (9 decks)

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