EGSA Study Guide 2026
Everything you need to pass the EGSA exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 EGSA Exam Format at a Glance
📚 EGSA Topics to Study (61)
✍️ Sample EGSA Questions & Answers
1. What is the purpose of a kW transducer in a generator paralleling system?
A kW transducer converts the generator's real power (kW) output into a proportional DC signal used by the load sharing module to balance load between paralleled units.
2. When replacing a flexible exhaust coupling on a generator set, what characteristic is most important when selecting the replacement part?
The replacement coupling must meet or exceed the OEM temperature and vibration specifications to ensure safe and reliable operation.
3. A diesel generator is running at 60 Hz at no load but drops to 59.4 Hz at full load. What is the governor droop percentage?
Droop % = (no-load speed − full-load speed) / rated speed × 100 = (60 − 59.4) / 60 × 100 = 1%.
4. What happens to a generator's terminal voltage waveform if one rotating rectifier diode in a brushless excitation system fails open?
A failed open diode converts three-phase rectification to an asymmetric configuration, introducing AC ripple on the DC field supply at twice the exciter frequency, which appears as terminal voltage modulation.
5. A reactive load bank test is performed primarily to evaluate the generator's ability to handle what type of load?
Reactive (inductive) load banks simulate real-world motor and transformer loads that demand kVAR in addition to kW.
6. Which safety precaution is critical when working on a generator set that is paralleled with the utility grid?
When a generator is paralleled with the utility, isolation requires proper permitting, de-energization of all parallel paths, and confirmation that the unit is fully de-coupled before any maintenance work.