In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. This method will
A
Cause withdrawing or throttling of steam
B
Reduce length of effective stroke of piston
C
Reduce maximum opening of port to steam
D
All of these
Correct Answer: Reduce length of effective stroke of piston
