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

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Mr. Dubey

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📊 Dynamics of Machinery

Q. 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

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✅ Correct Answer: (B) Frahm Tachometer

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