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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

What is the purpose of braking resistors in electrical systems, and how do they contribute to the operation of motor drives?

A Regulate voltage levels. Dissipate excess energy during brakes, trips, shutdowns.
B Control motor speed. Increase torque output.
C Filter harmonic distortion. Improve power quality.
D Provide backup power. Maintain operation during power outages.

Question 2

The faster the voltage pulses switch, the greater the impact of cable capacitance and inductance. More stress to motor’s windings, causing heat and premature failure.

A True
B False

Question 3

What should be done when your SF6 circuit breaker get "low gas pressure' alarm?

A Gas replenishment and testing.
B Nothing.
C Reset the alarm and continue the operation.
D Replaced with new breaker.

Question 4

Choose main el.Motors failures: [These failures are mainly due to generated heat and/or excessive system voltage.]

A Insulation failure.
B Bearing failure.
C Overheating.
D Short circuit failure.

Question 5

What is IGCT switching frequency?

A 500 Hz to 2 kHz
B 250 Hz to 500 Hz
C 1 kHz to 2 kHz
D 2 khz to 20 kHz