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.

Questions 10

Time Limit 5 min

Language English

Sample Questions

Here are some example questions from this quiz. Download the GYRO app to take the full test.

Question 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.

Question 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.

Question 3

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

A True

B False

Question 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.

Question 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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