LNG Operations - Engine

High Voltage Related Questions of LNG Fleet

Questions for ETO position working with High Voltage PMS and switchgear. Highly recommended for LNG fleet ETO's. Switchboards, procedures, VCB, HV Contactors and Safety questions are waiting for you here.

Питань 10

Час 5 min

Мова Англійська

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Питання 1

Chose Advantages of SF6 Circuit Breakers:

A - Easy SF6 gas pressure monitoring.

B - No fire or explosion threat in insulating medium.

C - High electrical durability, lasting 20+ years without reconditioning.

D - Softer switching than vacuum breakers reduces voltage peaks when interrupting big currents.

Питання 2

What Voltage considered as "Medium" onboard LNG?

A From 1,000 V to 3,300 V AC.

B From 3,300 V to 6,600 V AC.

C From 6,600 V to 11,000 V AC.

D From 1,000 V to 3,000 V DC.

Питання 3

Racking ACB into Inserted position is allowed when earth switch is closed. True or False?

A True

B False

Питання 4

What is the main risk of using Shaft generators onboard modern LNGs?

A Sudden ME slowdowns.

B Frequency surges.

C Main Voltage drops.

D ME Overspeed.

Питання 5

What are the main types of high voltage circuit breakers used in main switchboards?

A Air, vacuum, and sulfur hexafluoride (SF6).

B Manual, automatic, remote, and programmable.

C Electromechanical, hydraulic, pneumatic, and electronic.

D Single-pole, double-pole, three-pole, and four-pole.

High Voltage Related Questions of LNG Fleet

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