Class 4 (4th Engineer) MET 📅 Jan 2025

Exam Question

(a) Describe the principle of operation of EACH of the following detecting elements: (8)

(i) Bi-metal strips

(ii) Thermisters

(b) Explain, with the aid of sketches, typical applications where the devices described in (a) may be employed in high voltage electrical systems. (8)

Reference Answer

This answer provides a comprehensive, detailed, and "Surveyor-Grade" description of bi-metal strips and thermistors, including their principles of operation and typical applications in high voltage electrical systems, designed to achieve full marks.
### (a) Principle of operation of EACH of the following detecting elements:
#### (i) Bi-metal strips
**Concept:**

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