ETO Power Generation & Distribution 2

Question 1

Before connecting a second generator in parallel to the live main bus, which set of conditions must ALL be satisfied simultaneously?

Accepted Answer

Matching voltage, frequency, phase sequence, and phase angle

Answer

Matching only voltage and frequency

Answer

Matching only phase sequence and phase angle

Answer

Matching only voltage and phase sequence

Question 2

Which instrument provides visual indication of phase angle difference between an incoming generator and the live busbar during the synchronizing process?

Accepted Answer

Synchroscope

Answer

Wattmeter

Answer

Power factor meter

Answer

Frequency meter

Question 3

What type of fault is most commonly encountered in ship electrical systems?

Accepted Answer

Earth (ground) fault

Answer

Open circuit fault

Answer

Phase-to-phase fault

Answer

Three-phase short circuit fault

Question 4

Which system automatically disconnects non-essential loads when a ship's power plant becomes overloaded?

Accepted Answer

Preferential tripping system

Answer

Differential protection system

Answer

Overcurrent relay system

Answer

Bus protection system

Question 5

What does reactive power (measured in VAR) represent in a ship's electrical distribution system?

Accepted Answer

Power exchanged to maintain magnetic and electric fields that performs no net useful work

Answer

Power that directly drives motors and heating loads

Answer

The total apparent power consumed by all connected loads

Answer

Power generated in excess of system demand

Question 6

What does a low power factor in a ship's electrical system indicate about system operation?

Accepted Answer

A high proportion of reactive power relative to active useful power, increasing conductor losses

Answer

High efficiency of the electrical distribution system

Answer

Excess real power is being generated above demand

Answer

Optimal operation of synchronous generators at rated load

Question 7

Under STCW regulations, which table specifically defines the minimum standard of competence for Electro-Technical Officers?

Accepted Answer

Table A-III/6

Answer

Table A-II/1

Answer

Table A-IV/2

Answer

Table A-III/1