When a reference input signal from the...

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Question 1 of 205eccefa1bacbc34ba4d471fb

When a reference input signal from the bridge to the engine room takes place, the signal is inverted in the amplifiers and function generators. A negative signal from the amplifier, shown in the illustration, labeled "M", will result in a __________. See illustration SE-0002.

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🔍 Key Concepts

• Signal inversion through amplifiers and function generators • Relationship between signal polarity (positive/negative) and selecting ahead vs astern channels • How many inverting stages exist between point "M" and each hydraulic actuator pilot motor

💭 Think About

• Starting at point "M", trace the path of a negative signal upward toward the ahead pilot motor. How many times is the signal inverted before it reaches that motor? • Now trace the same negative signal from point "M" downward toward the astern pilot motor. How many inversions occur on this path, and what does that do to the final polarity? • Which pilot motor (ahead or astern) is supposed to move when the bridge orders a change that produces a negative error at amplifier "M"?

✅ Before You Answer

• Identify every block between "M" and each pilot motor that explicitly inverts the signal (amplifier/function generator stages). • Confirm which channel (ahead or astern) is energized by a positive final command signal to its SCR motor power supply. • Before choosing, verify whether a negative error at "M" is intended to command ahead or astern movement of the propeller in this control scheme.

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