A vacuum recorded in the condenser of a steam power plant is 740 mm of

1.	A vacuum recorded in the condenser of a steam power plant is 740 mm of Hg. Find the absolute pressure in the condenser in Pa. The barometric reading is 760 mm of Hg.
Answer» Vacuum recorded in the condenser = 740 mm of Hg Barometric reading = 760 mm of Hg We know that, Absolute pressure in the condenser = Barometric reading – vacuum in the condenser = 760 – 740 = 20 mm of Hg = 20 × 133.4 N/m² (\(\because\) 1 mm of Hg 133.4 N / m²) = 2668 N/m² = 2668 Pa.

A vacuum recorded in the condenser of a steam power plant is 740 mm of Hg. Find the absolute pressure in the condenser in Pa. The barometric reading is 760 mm of Hg.

Answer»

Vacuum recorded in the condenser = 740 mm of Hg

Barometric reading = 760 mm of Hg

We know that,

Absolute pressure in the condenser

= Barometric reading – vacuum in the condenser

= 760 – 740 = 20 mm of Hg

= 20 × 133.4 N/m² (\(\because\) 1 mm of Hg 133.4 N / m²)

= 2668 N/m² = 2668 Pa.

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A vacuum recorded in the condenser of a steam power plant is 740 mm of Hg. Find the absolute pressure in the condenser in Pa. The barometric reading is 760 mm of Hg.

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