Exam (elaborations)
CWB MOD 19 ULTRASONIC INSPECTION QUESTIONS AND ANSWERS RATED A
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CWB MOD 19 ULTRASONIC INSPECTION QUESTIONS AND ANSWERS RATED A Exercise Questions - Section 1 & 2 1. The upper limit of human hearing is approximately a) 20 Hz b) 20 kHz c)20 MHz b) 20 kHz Exercise Questions - Section 1 & 2 2. A typical frequency used for ultrasonic testing of welds is: a) 2.25MH...
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