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.

Mga Tanong 20

Time Limit 9 min

Wika Ingles

Mga Sample na Tanong

Narito ang ilang halimbawang tanong mula sa quiz na ito. I-download ang GYRO app upang kunin ang buong pagsusulit.

Tanong 1

When does the PMS switch between isochronous and droop modes?

A When the fuel supply decreases

B When the generators are running at full capacity

C When additional generators are brought online or taken offline, requiring smooth load transitions

D When there is more power demand

Tanong 2

Why is 4 mA used as the minimum signal level in a 4-20 mA loops?

A To detect wiring faults - broken loop or disconnection.

B To provide more accuracy

C To increase response time of the sensors

D For more precize adjustments

Tanong 3

What for Resistive – Capacitive (RC) circuits are used?

A For filtering.

B For shunting.

C For rectifying.

D For amplifying.

Tanong 4

Why is tuning a PID controller essential when handling boil-off gas (BOG) on a gas tanker?

A It ensures constant supervision.

B It adjusts system pressure automatically.

C Proper tuning ensures precise control of BOG management, preventing pressure surges and optimizing fuel use.

D It minimizes the need for backup systems

Tanong 5

How do VFDs deals with motor heating, voltage spikes, and harmonics in electrical systems?

A By providing soft start/stop functionality to reduce mechanical stress on the motor.

B By incorporating filters and reactors to suppress voltage spikes and harmonics.

C By adjusting motor speed to match load demand, reducing overheating.

D All of the above.

Kunin ang Quiz na Ito. I-download ang GYRO app upang kunin ang quiz na ito at subaybayan ang iyong progreso.