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Main Propulsion, Turbines, Boilers. Test 8

Online Maritime Tests > Tests > Main Propulsion, Turbines, Boilers. Test 8

Main Propulsion, Turbines, Boilers. Test 8

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Serious tube leakage in the air ejector condenser assembly will cause _____

loss of vacuum.
faulty steam pressure.
clogged steam strainers.
fouled nozzles.

Which part in this diagram is the high pressure turbine ?

Question Image

No. 2
No. 6
No. 1
No. 4

Superheated steam is steam _____

that has been heated until it is 'dry'.
that can be used for heating the accommodation.
that is mixed with water vapour.
that has been condensed.

Which of the following statements regarding steam turbines is NOT true ?

The H.P. turbine is a faster rotating machine than a diesel engine.
From the H.P. turbine the steam then goes to the condenser.
The H.P. turbine receives the steam before the L.P. turbine.
The H.P. turbine is smaller than the L.P. turbine.

Turbo alternators perform which of the following tasks ?

Supplying electricity on steamships when the main boiler is operating.
Supplying electricity on a motorship.
Supplying electricity from diesel engines.
Supplying electricity on steamships when the main boiler is shut down.

Name the two (2) different lubrication oil circuits of a steam turbine ?

The reduction gear oil / The turbine shaft bearing oil.
The thrust bearing and shaft circuit. / The front and governor circuit.
The front bearing circuit/ The rear bearing circuit.
The bearing and gear oil circuit / The governor oil circuit.

Which of the following statements regarding main boilers is NOT true ?

At least two safety valves will be fitted.
The burners could be at the top firing down.
The feed water need not be very pure.
The superheated steam pressure could be as much as 60 bar.

Modern high pressure boilers produce which of the following ?

Superheated steam.
Saturated steam.
Fresh water for drinking.
Feed water.

What is part No. 3 ?

Question Image

Turbine drive gear train.
Turbine electromagnetic clutch.
Turbine coupling.
Turbine bearing.

Which way does the steam pass through the system ?

Question Image

From the condensor to the low pressure turbine.
From the high pressure turbine to the low pressure turbine.
From the supply valve to the high pressure turbine.
From the low pressure turbine to the high pressure turbine.

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Main Propulsion, Turbines, Boilers. Test 8

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