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Ltheory2 > Type 23 Dis + Prop > Flashcards

Type 23 Dis + Prop Flashcards

1
Q

How many diesel gens in a type 23?

A

4

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2
Q

Where are the 4 diesel gens located?

A

2 located in the forward auxiliary machinery room

2 located in the upper auxiliary machinery room

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3
Q

What’s the output on a type 23?

A

1.3MW
600V
61.2Hz
3 phase

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4
Q

What are the 7 breakers used in the distribution system on the type 23?

A 
Supply breaker
Interconnector breaker
Shore supply/ ship alongside breaker
Electric motor breaker
Motor generator feeder breaker
Motor generator supply breaker
Diesel generator alternative supply breaker
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5
Q

600v bus bars in switchboards area connected together by what?

A

Interconnector breakers

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6
Q

Converter regulator converts and regulates the voltage at …

A

750V DC

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7
Q

Control of propulsion motors and diesel generators is carried out from where?

A

Supervisors desk in the Ship Control centre (SCC)

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8
Q

What determines a supply breaker?

A

Breaker connected to the supply

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9
Q

What determines a feeder breaker?

A

Connected to a motor feeding another bit of kit

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10
Q

3 types of EDP fitted on the 23’s?

A

Type 1
Type 2
Type 3

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11
Q

2 sources of 450v if the motor gens are lost

A

Converted diesel gen

Emergency gen

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12
Q

Type 23 emergency generator, what’s the output?

A

270kW
450 v
60 Hz
3 phase

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13
Q

What does the emergency switchboard supply?

A 
Steering motors
HPSW pumps
Surgery / sickbay
Smoke clearance exhaust fans
Portable pump sockets
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14
Q

What type of motor is used for propulsion in the type 23?

A

Electric motor

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15
Q

Electric system is comprised of 9 basic components, what are they?

A 
Air filters
Cooling fans
Yoke 
Compole
Armature - commutator - brush gear
Main pole
Yoke
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16
Q 
Shaft RPM is used to control the speed of a ship.
What’s the SRPM of...
2 gens
3 gens
4 gens
A

2 gens - 65 SRPM - 8-9 knots
3 gens - 80 SRPM - 10-12 knots
4 gens - 90 SPRM - 14 knots

Ltheory2 (5 decks)

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