← MeoMock / Written exams
Class 2 (2nd Engineer) MET 📅 Nov 2025

Exam Question

(a) (i) Sketch a diagrammatic arrangement of a static or self-excited alternator. 

(ii) Describe the operation of the self-excited alternator. 

(c) State why the voltage dip is less in the self-excited alternator than in brushless or conventional alternators. 

Exam question diagram

Reference Answer

(a) (i)
(a) (ii) Compounded means that the excitation is derived from both the generator’s output voltage and its output current.
On no-load , excitation to the generator is provided by the PRI.1 winding of the excitation transformer.
On load , the generator current contributes an additional excitation current via the PRI.2 winding of the transformer. This helps maintain a constant output voltage .

Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.

View plans Browse library

← Browse more questions

Prepare on Android — MeoMock on Google Play