1
GATE ME 2010
MCQ (Single Correct Answer)
+2
-0.6
In a steam power plant operating on the Rankine cycle, steam enters the turbine at $$4$$ $$MPa,$$ $${350^ \circ }C$$ and exits at a pressure of $$15$$ $$kPa.$$ Then it enters the condenser and exits as saturated water. Next, a pump feeds back the water to the boiler. The adiabatic efficiency of the turbine is $$90\% $$. The thermodynamic states of water and steam are given in the table. GATE ME 2010 Thermodynamics - Rankine Cycle Question 22 English

$$h$$ is specific enthalpy, $$s$$ is specific entropy and $$v$$ the specific volume; subscripts $$f$$ and $$g$$ denote saturated liquid state and saturated vapour state.

The net work output $$(kJ/kg)$$ of the cycle is

A
$$498$$
B
$$775$$
C
$$860$$
D
$$957$$
2
GATE ME 2010
MCQ (Single Correct Answer)
+2
-0.6
In a steam power plant operating on the Rankine cycle, steam enters the turbine at $$4$$ $$MPa,$$ $${350^ \circ }C$$ and exits at a pressure of $$15$$ $$kPa.$$ Then it enters the condenser and exits as saturated water. Next, a pump feeds back the water to the boiler. The adiabatic efficiency of the turbine is $$90\% $$. The thermodynamic states of water and steam are given in the table. GATE ME 2010 Thermodynamics - Rankine Cycle Question 21 English

$$h$$ is specific enthalpy, $$s$$ is specific entropy and $$v$$ the specific volume; subscripts $$f$$ and $$g$$ denote saturated liquid state and saturated vapour state.

Heat supplied $$(kJ/kg)$$ to the cycle is

A
$$2372$$
B
$$2576$$
C
$$2863$$
D
$$3092$$
3
GATE ME 2009
MCQ (Single Correct Answer)
+2
-0.6
The inlet and the outlet conditions of steam for an adiabatic steam turbine are as indicated in the figure. The notations are as usually followed. GATE ME 2009 Thermodynamics - Rankine Cycle Question 24 English

If mass flow rate of steam through the turbine is $$20kg/s,$$ the power output of the turbine (in $$MW$$) is

A
$$12.157$$
B
$$12.941$$
C
$$168.001$$
D
$$168.785$$
4
GATE ME 2009
MCQ (Single Correct Answer)
+2
-0.6
The inlet and the outlet conditions of steam for an adiabatic steam turbine are as indicated in the figure. The notations are as usually followed. GATE ME 2009 Thermodynamics - Rankine Cycle Question 23 English

Assume the above turbine to be part of a simple Rankine cycle. The density of water at the inlet to the pump is $$1000$$ $$kg/{m^3}.$$ Ignoring kinetic and potential energy effects, the specific work (in $$kJ/kg$$) supplied to the pump is

A
$$0.293$$
B
$$0.351$$
C
$$2.930$$
D
$$3.510$$
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