Question 151Electricity & Electronics - 1st Asst/Chief

70% to pass

What is the basic "control action" of a magnetic amplifier dependent upon?

Achanges in resistance
Bchanges in inductance
Cchanges in capacitance
Dchanges in conductance
AI Explanation

The correct answer is B) changes in inductance. The basic "control action" of a magnetic amplifier is dependent upon changes in inductance. Magnetic amplifiers operate by utilizing the change in inductance of a reactor or transformer winding when a control current is applied. This change in inductance then modulates the main power signal, allowing the magnetic amplifier to act as an amplifier or switch. The other options, changes in resistance, capacitance, and conductance, are not the primary mechanisms by which a magnetic amplifier operates.

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Official Resources
46 CFR Electrical Engineering 46 CFR Machinery & Electrical USCG National Maritime Center
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