A History Of Modern Europe Since-1789 by V D Mahajan

By V D Mahajan

For college kids of B.A, M.A and in addition worthwhile for aggressive examinations

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By V D Mahajan

For college kids of B.A, M.A and in addition worthwhile for aggressive examinations

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2 Safety issues During acceleration sensitivity testing, one must ensure both the operator’s and the equipment’s safety. Exposing the operator to high intensity noise may cause permanent hearing loss. In the United States, safety regulations (refer to Occupational Safety and Health Administration [B66]) require employers to provide protection against the effects of high noise exposures and to administer “a continuing and effective hearing conservation program” whenever the noise exposures exceed specified levels.

The results cannot distinguish between two oscillators, the Γ s of which are antiparallel. In the method of Watts et al. [B79], the sensitivity of doubly rotated quartz resonators to voltages applied to the electrodes is used to resolve the ambiguity. When the proper magnitude applied voltage is in-phase with the applied acceleration, the sidebands are increased. When the applied voltage is 180 degrees out of phase with the acceleration, the sidebands are decreased. The method allows not only the determination of the sign of Γ , but also the elimination of cable vibration effects.

If it is believed that none are present over some range of performance, then that also should be stated. Thermal hysteresis is also found in quartz crystal oscillators, much more so in devices using AT-cuts as compared to SC. This means that the frequency vs temperature plot generated as the temperature is increased will not be the same as that generated while decreasing the temperature. 5 Rubidium devices Rubidium oscillators exhibit all of the effects observed in quartz oscillators, most of which can be reduced by proper sealing.

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