Direction: The inlet and the outlet conditions of steam for an adiabatic steam turbine are as indicated in the notations are as usually followed. 
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Assume the above turbine to be part of a simple Rankine cycle. The density of water at the inlet to the pump is 1000 kg/m3. Ignoring kinetic and potential energy effects, the specific work (in kJ/kg) supplied to the pump is
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- 0.293
- 0.351
- 2.930
- 3.510
- 0.293
Correct Option: C
Pump work
hinlet + q = houtlet + Wpump
here, q = 0
Wpump = hinlet – houtlet
∴ W = ∆hpump
Reversible adiabatic
dq = dh– Vdp
∴ dh = Vdp
∴ dhpump =V(p2 – p1) = 1/ρ (3000–70) kPa = 2.930kPa
