BHEL Engineer And Supervisor Trainee Recruitment Practice Test

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A steady-flow turbine has inlet enthalpy 3200 kJ/kg, outlet enthalpy 2600 kJ/kg, and heat transfer of -20 kJ/kg to the turbine. Neglect kinetic and potential energy changes. What is the specific work output?

620 kJ/kg 530 kJ/kg 580 kJ/kg 670 kJ/kg

Correct Answer:

580 kJ/kg

Explanation:

Steady-flow energy balance gives w = h1 - h2 + q = 3200 - 2600 -20 = 580 kJ/kg.

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