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electronics and communication engineering measurements and instrumentation
1. For use at 50 Hz the range of scale of vibrating reed frequency meter is
(A): 25 - 75 Hz
(B): 40 - 60 Hz
(C): 42 - 58 Hz
(D): 47 - 53 Hz
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By: guest on 02 Jun 2017 01.01 am
Generally the frequency does not fall below 47 Hz and does not exceed 53 Hz.
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