The process of draining steam for heating the feed-water is known as

• Bleeding:
-Bleeding is the process of draining steam from the turbine, at certain points during its expansion, and using this steam for heating the feed-water supplied to the boiler.
-The Ideal Rankine cycle, modified to take into account the effect of bleeding is known as the Regenerative cycle. 

• Rankine Cycle:

Process 3-4: Isentropic expansion in Turbine (WT)
Process 4-1: Constant pressure heat removal in Condenser (Q2)
Process 1-2: Isentropic compression in Pump (WP)
Process 2-3: Constant pressure heat addition in Boiler (Q1)

🛑Important Points:
Governing
-Steam turbine governing is the procedure of controlling the flow rate of steam to a steam turbine so as to maintain its speed of rotation is constant.
-The variation in load during the operation of a steam turbine can have a significant impact on its performance.
Reheating
-In the reheat cycle, the total expansion of steam from the boiler to condenser pressure is carried out in more than one stage with reheating of steam in between the stages.
-The main advantage of the reheat cycle is that it increases the dryness fractions of steam at condenser inlet thus making it possible to use higher boiler pressure. It also increases the net-work output thus decreasing the mass flow rate of steam required for the same power output. 
-By reheating it's not sure that efficiency will increase, it may decrease also depending on the mean temperature of heat addition.
-Also, the mean temperature of heat addition doesn't always increase. It depends on the pressure in the reheater and entry pressure.