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.

Питань 20

Час 9 min

Мова Англійська

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Питання 1

Wiring details in 4-wire transmitters?

A 2 wires are used for power supply, and two separate ones are used for signals.

B 1 for ground, 1 for power supply, and two separate ones are used for signals.

C 1 for ground and three separate ones are used for signals.

D 1 for ground, 2 for power supply, and one separate is used for signal.

Питання 2

What is the main role of the 'D' (Derivative) term in a PID controller onboard a gas tanker?

A It adjusts the system response speed.

B It predicts future errors by calculating the errors' rate of change.

C It increases system stability by adjusting noise levels

Питання 3

What data you can find out with Oscilloscope?

A Signal frequency.

B Signals phase relation.

C Form of signal.

D Amplitude of signal.

E Signal duration.

F All of the mention above

Питання 4

Why is harmonic distortion a concern in electrical systems on board?

A Harmonics eliminate voltage drops across long cables.

B It can cause overheating, vibration, and reduced efficiency of electrical equipment.

C Harmonics reduce the heating of the wiring.

Питання 5

Knock sensor readings jumping, what should you do?

A Check the terminals connection

B Replace the sensor

C Calibrate the sensor

D Adjust span or zero scale

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