Which type of frequency measuring instrument has multiple reeds of different natural frequency to measure vibrations?a)Fullarton Tachometerb)Frahm Tachometerc)Both a and bd)None of the aboveCorrect answer is option 'B'. Can you explain this answer?

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Which type of frequency measuring instrument has multiple reeds of different natural frequency to measure vibrations?

a)
Fullarton Tachometer
b)
Frahm Tachometer
c)
Both a and b
d)
None of the above

Correct answer is option 'B'. Can you explain this answer?

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Test: Measurements of Vibrations

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Which type of frequency measuring instrument has multiple reeds of di...

Frahm tachometers are particularly useful to measure the speeds of engines whose rotating shafts are not easily accessible. Design a compact and lightweight Frahm tachometer with 12 reeds to measure engine speeds in the range 300-600 rpm.

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Which type of frequency measuring instrument has multiple reeds of different natural frequency to measure vibrations?a)Fullarton Tachometerb)Frahm Tachometerc)Both a and bd)None of the aboveCorrect answer is option 'B'. Can you explain this answer?

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