# GATE Mechanical 2014 Set 1 | Question: 49

An ideal reheat Rankine cycle operates between the pressure limits of $10 \: kPa$ and $8 \: MPa$, with reheat being done at $4 \: MPa$. The temperature of steam at the inlets of both turbines is $500^ \circ C$ and the enthalpy of steam is $3185 \: kJ/kg$ at the exit of the high pressure turbine and $2247 \: kJ/kg$ at the exit of low pressure turbine. The enthalpy of water at the exit from the pump is $191 \: kJ/kg$. Use the following table for relevant data.

$$\begin{array}{|c|c|c|c|c|} \hline \text{Superheated steam temperature} & \text{Pressure} & v & h & s \\ (^\circ C) & \text{(MPa)} & (m^3/kg) & (kJ/kg) & (kJ/kg.K) \\ \hline 500 & 4 & 0.08644 & 3446 & 7.0922 \\ \hline 500 & 8 & 0.04177 & 3399 & 6.7266 \\ \hline \end{array}$$

Disregarding the pump work, the cycle efficiency (in percentage) is _______

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