LNG Operations - Engine

Automation Knowledge

You will meet questions for Senior ETO position for LNG carriers. questions would include VFDs, PMS, Electrical Propulsion, sensors, signals, communication of various equipment and troubleshooting.

Questions 20

Time Limit 9 min

Language English

Sample Questions

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

Question 1

How is a thyristor typically triggered into conduction?

A By applying a small voltage to the gate terminal.

B By increasing the anode current.

C By applying high voltage across the anode and cathode.

D By reducing the gate voltage.

Question 2

How do braking resistors help prevent overvoltage in motor drives?

A By absorbing excess energy and dissipating it as heat, preventing voltage spikes.

B By amplifying the voltage output, ensuring consistent power delivery.

C By reducing the voltage input, regulating the motor speed.

D By storing excess energy for future use, maintaining system stability.

Question 3

What can affect accuracy of Rogowski coils measurements?

A Conductor material and temperature.

B Nearby magnetic fields and noise.

C Coil length and diameter.

D Input voltage and current waveform.

Question 4

In the PMS, what determines the load-sharing ratio between two generators running in parallel in droop mode?

A The fuel consumption rate of each generator

B Adjusts the load based on the difference in frequency

C Depends of the load on the busbars

D The generator with the lowest output takes the entire load

Question 5

What is the primary function of a PID controller in gas tanker automation systems?

A To provide the control of cargo pumps.

B To automatically adjust control outputs to maintain desired process values like temperature, pressure, and flow.

C To trigger the alarms during system failures.

D To monitor cargo system conditions

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