Test about Propulsion Control System (AC4 DENIS)

Test results

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Right answers:
1

Can DENIS be used together with controlled pitch propeller?

Your answer is correct:

Yes.
2

Can the main engine be operated with a malfunctioning governor?

Your answer is correct:

Yes, from the engine local manoeuvring stand.
3

Can the main engine be operated with faulty rpm sensors?

Your answer is correct:

Yes, from the engine local manoeuvring stand.
4

Is it possible to cancel a shutdown from bridge?

Your answer is correct:

Yes.
5

Is it possible to cancel a shutdown function?

Your answer is correct:

Yes, but not the over speed shutdown function.
6

Is it possible to cancel a slowdown from the bridge?

Your answer is correct:

Yes, but only when on bridge control.
7

The safety cut-out device must immediately stop the engine when:

Your answer is correct:

Engine over speed, Emergency stop actuated, pressure drop in the air spring of the exhaust valves.
8

There are two types of processor cards, what is the difference between them?

Your answer is correct:

One is 5 MHz, the other is 8 MHz.
9

What happens if both rpm systems have failed?

Your answer is correct:

Start block.
10

What is DENIS?

Your answer is correct:

An interface between the engine and the remote control system.
11

What is an adaptor card?

Your answer is correct:

Interface card for input/output signals.
12

What is reading the rpm signals in the AC4 and SSU?

Your answer is correct:

The units have rpm cards for this purpose.
13

What is the input voltage to the AC4 and SSU units?

Your answer is correct:

24 V.
14

What is the main purpose of the load program?

Your answer is correct:

Preventing the engine from thermal overload.
15

What is the purpose of the safety system?

Your answer is correct:

Monitor shutdowns and slowdown functions.
16

What voltages are generated by the power supply?

Your answer is correct:

5 V DC, +15 V DC and -15 V DC.
17

Where is the safety cut-out device mounted?

Your answer is correct:

Fuel pump.
18

Which of the following triggers the 3 start Attempts Failed indicator?

Your answer is correct:

Third and last start attempt has finished unsuccessfully.
19

Which of the following triggers the Start Failure alarm?

Correct answer:

3 start attempts failed.

Your Answer:

Turning gear engaged.
20

Which of the following triggers the Start Interlock alarm?

Your answer is correct:

Turning gear engaged.
21

Which of the following will trigger the Crash Astern command?

Your answer is correct:

The function is automatic and will be activated if the manoeuvre lever on the bridge is moved to astern when the engine speed is above brake air limit.