What is the primary function of an Automatic Voltage Regulator (AVR) in a diesel generator set?

To monitor and maintain a stable output voltage by adjusting excitation current

To regulate the mechanical engine speed

To prevent low-load wet stacking in the exhaust manifold

To monitor and maintain a stable output voltage by adjusting excitation current

To control fuel injection timing during starting

Operating a diesel generator with a clogged air filter primarily causes which of the following operational symptoms?

Excessive black exhaust smoke and higher fuel consumption

Increased excitation voltage at the alternator

High output frequency above 60 Hz

How is energy converted sequentially within a complete diesel generator set?

Chemical energy to mechanical energy, then to electrical energy

Thermal energy directly to magnetic energy, then to mechanical energy

Electrical energy to mechanical energy, then to chemical energy

Chemical energy to mechanical energy, then to electrical energy

Mechanical energy directly to thermal energy, then to electrical energy

Which main component of a diesel generator set is responsible for controlling engine speed to maintain frequency under changing loads?

Automatic Voltage Regulator (AVR)

Generator and DG Set Mechanic Diesel (Diploma) Quiz

Intermediate🏦 57 question bank⏱ ~50 min

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Practice Generator and DG Set MCQs with answers and detailed explanations. Ideal for Diploma Mechanic Diesel, RRB ALP, and PSU exams.

Practice this generator and dg set mechanic diesel quiz with 60 MCQs at the Intermediate level, with a 50-minute timer simulating real exam pressure. Directly useful for Diploma Semester Exams, ITI Trade Test, RRB ALP, SSC JE preparation. Every question includes an instant answer check and a clear explanation, so you learn while you practice.

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Questions: 60 multiple-choice (Intermediate)
Time limit: 50 minutes with auto-submit
Scoring: competitive pattern with negative marking
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