Automation, Control Equipment. Test 2

Please indicate the correct sequence of action to take place in an alarm/monitoring and safety system.

St.by start, alarm, slowdown, shutdown.
Alarm, slow down, st.by start, shutdown
Alarm, st.by start, slowdown. shutdown
Alarm, slowdown, st.by start, shutdown.

For any engine room operated in UMS-mode, defined checks are to be carried out prior to switching to UMS-mode. Is it the Engineer on Duty's responsibility to have the full control of condition of any check items prior to switching to UMS-mode and leaving the engine room, or may he leave the engine room for a short period trusting the alarms and automatic functions are sufficient for safe operation?

Ok for 15-20 minutes without a proper check
Ok for one hour without a proper check
Ok for a short period as long as one rating is left 'on watch'
A described UMS-mode check shall always be carried out prior to leaving the engine room, irrespective of the time he will be absent.

What is the meaning of the expression dead-band

The controller will not react on a process change in a specific range
It will take some time before the controller is reacting on a change
It will only react in a limited time
It will is not responding to adjustment of set-point

In some cases we can see that a resistor is connected over an alarm contact (see diagram). Why is this connection used?

Enable measuring the total resistance of the circuit.
To monitor the cable/wires for break.
To avoid sparks on the contacts when opening and closing.
To stabilise power consumption.

During synchronising, the incoming generator should be running slightly 'fast' compared to the busbar frequency.This is to ensure that the:

Incomers reverse power trip is tested
Incomer picks up as a motor
Incomer picks up as a generator
Most rapid synchronising action is achieved

During a routine seapassage the cooling water high temperature alarm system for one of the auxiliary engines is out of function and blocked. What will be the appropriate immediate action?

Have the failure immediately repaired
All the actions listed in the other alternatives
If the failure is in conflict with pre-requisitional electric power supply, ensure manual operation mode until the failure is corrected
Switch to another generator set (that is available)

Which group of electrical services are likely to be supplied from an emergency generator?

Engine room lighting and bow thruster
Steering gear and alarm system
Galley and air conditioning
Sound powered telephone system

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