The pneumatic circuit shown in the...

Question 1 / 2066636eef28f7522a1c5200a3

Question 1 of 2066636eef28f7522a1c5200a3

The pneumatic circuit shown in the illustration is part of a control system used with large low-speed diesel engines. The arrangement may be used to control __________. Illustration MO-0118

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Question 1 of 20

66636eef28f7522a1c5200a3

The pneumatic circuit shown in the illustration is part of a control system used with large low-speed diesel engines. The arrangement may be used to control __________. Illustration MO-0118

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🔍 Key Concepts

• Follow the labeled lines: from speed setting lever (bb) and to governor speed control setting actuator (aa) and think about what the governor normally adjusts on a large low‑speed diesel. • Notice the Normal/Emergency Control Air Transfer Valve (D) and Emergency Control Air Pressure Regulator (B) – these suggest a backup way to send a control signal when normal control air fails. • Remember what systems typically use control air and a governor servomotor on slow‑speed main propulsion engines.

💭 Think About

• If air from the speed setting lever is being routed through regulators and then sent to the governor actuator, what actual engine parameter will change when this air signal changes? • Would an "emergency control air valves group" normally be arranged just to affect an indicating device, or to affect something that directly changes engine output? • Look at where the lines are going: do they connect to the propeller clutch, just to an indicator on the bridge, or to the mechanism that meters fuel to the engine?

✅ Before You Answer

• Verify which option directly involves the governor or fuel control of the engine rather than just indication or minor signal adjustment. • Check that the function you choose is something that would reasonably require a normal/emergency transfer and pressure‑regulated control air. • Eliminate any options that only deal with electrical indication (like a tachometer) or with mechanical clutching hardware that is not shown in the pneumatic diagram.

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Question 1 of 20

The pneumatic circuit shown in the illustration is part of a control system used with large low-speed diesel engines. The arrangement may be used to control __________. Illustration MO-0118

bridge tachometer variations

the proportional offset of the throttle signal

main engine speed

emergency clutching operations

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Question 1 / 2066636eef28f7522a1c5200a3

Question 1 of 2066636eef28f7522a1c5200a3

The pneumatic circuit shown in the illustration is part of a control system used with large low-speed diesel engines. The arrangement may be used to control __________. Illustration MO-0118

Back

Question 1 of 20

66636eef28f7522a1c5200a3

The pneumatic circuit shown in the illustration is part of a control system used with large low-speed diesel engines. The arrangement may be used to control __________. Illustration MO-0118

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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