Auxiliary Machinery. Test 57 – Online Maritime Tests

This steering gear telemotor system is drawn in the neutral position, rudder amidship. This means that _____ .

pump 'P' is not pumping.
neither solenoid 'S1' or 'S2' is energised.
the capacity control is at zero.
the double check valves are blocked.

What is the purpose of the capacity control on the telemotor of a steering gear ?

To keep the electric capacity between parameters (absorption).
To keep the oil delivery quantity of the pump constant.
To keep the outlet pressure and capacity to react constant.
To keep the oil delivery quantity to the telemotor ram constant.

On resuming normal purification after automatic de-sludging you frequently experience a high temperature alarm. What will you do to avoid reoccurrence ?

Decrease capacity through the purifier.
Fit or adjust (increase) time delay on the high temperature alarm.
Lower the set point of the oil temperature.
Increase capacity through the purifier.

How is the soot which will accumulate between the finned piping of an exhaust gas boiler removed ?

Soot blowing at sea, water washing in port.
By chemical cleaning with pump in port.
By high pressure water jet washing at 3000 psi.
By sand blasting in the drydock.

The flame failure lamp on the control panel of this boiler burner will illuminate when _____

the flame is dark due to incorrect fuel/air ratio.
Any of these faults.
the pilot burner fails to fire the main burner.
the flame is being smothered by water in the fuel.

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