The displacement of the D-slide valve is ______________ the steam lap by a distance known as lead of the valve.
(a) greater than
(b) less than
(c) equal to
(d) none of the mentioned
The question was asked during an interview for a job.
I would like to ask this question from Steam Engine Valves and Reversing Gears topic in chapter Steam Engine Valves and Reversing Gears of Machine Dynamics