Electro-Technical Competence

Basic Questions of Electrical Equipment

This test covers the basics of operating and maintaining electrical equipment, including setting thermal relays, measuring voltages, servicing batteries, distinguishing between analog and digital signals, methods of starting electric motors, selective protection, automations and much more.

Питань 18

Час 9 min

Мова Англійська

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Питання 1

During normal operation of the ship, emergency consumers are powered by...

A Emergency diesel generator.

B Main diesel generator.

C Emergency battery bank.

Питання 2

What is the main indication of bearing failure in an asynchronous motor?

A Increased vibration and noise.

B Rise in winding temperature.

C Increase in insulation resistance.

D Decrease in power consumption.

Питання 3

To which winding is voltage applied from an external source in the case of field flashing (initial excitation) of a brushless generator?

A To the exciter field winding.

B To the generator field winding.

C To the exciter stator winding.

D To the generator stator winding.

Питання 4

Can a transformer be connected in reverse (primary and secondary windings swapped)?

A Yes, but only if it is rated for such load and voltage.

B No, because the direction of current will change.

C Yes, but only for transformers with a power rating of less than 1 kW.

D No, this will lead to core saturation.

Питання 5

According to SOLAS, how long is required to start and load the emergency diesel generator onto the bus-bars?

A Up to 45 seconds.

B Up to 60 seconds.

C 10-25 seconds.

D Depends on the ship design.

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