Exam Question
Write short notes on the following: (16)
(a) ultrasonic testing (8)
(b) shaft earthing device (8)
Class 4 (4th Engineer)
MEKG
📅 Nov 2025
Reference Answer
### (a) Ultrasonic Testing (UT)
Ultrasonic Testing is a non-destructive testing (NDT) method that utilizes high-frequency sound waves (typically 0.5 to 15 MHz) to detect internal flaws, measure material thickness, and characterize materials.
**1. Principle of Operation:**
- A transducer (probe) converts electrical energy into mechanical vibrations (ultrasonic waves).
Ultrasonic Testing is a non-destructive testing (NDT) method that utilizes high-frequency sound waves (typically 0.5 to 15 MHz) to detect internal flaws, measure material thickness, and characterize materials.
**1. Principle of Operation:**
- A transducer (probe) converts electrical energy into mechanical vibrations (ultrasonic waves).
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