Power Plant Engineering
Isotopes of same elements have

Different chemical properties and same atomic numbers
Different masses and different atomic numbers
Same chemical properties but different atomic numbers
Same atomic number and different masses

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Power Plant Engineering
A pressurized water reactor employs pressurizes for the following application

To maintain constant pressure in primary circuit under varying load
To Supply high pressure steam
To increase pressure of water in primary circuit
To provide sub cooled water at high pressure

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