Running speeds of steam turbine can be brought down to practical limits 1. By using heavy flywheel 2. By using a quick response governor 3. By compounding 4. By reducing fuel feed to the furnace  (a)...

Running speeds of steam turbine can be brought down to practical limits 1. By using heavy flywheel 2. By using a quick response governor 3. By compounding 4. By reducing fuel feed to the furnace

 (a) Only 3

 (b) 1, 2, 3, and 4

 (c) 1, 2, and 4

 (d) 2 and 3