Why Hg means mecuiry used in vaccum mesuring unit?
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Answer / rvg.msceb
vacuum means the absence of pressure. due to good specific
gravity of mercury and its high rate of thermal expansion
that is fairly constant over a wide temperature range,
makes useful for measuring pressure even if vacuum.
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After synchronizing the running generator with grid, the avr getting tripped and the generator breaker also oettong tripped, before tripping the avr the pf meter of generator is showing leading pf please kindly give a suggestion to rectify this problem.
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