Q. 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