The degree of turbulence increases ………… with the piston speed.
A. indirectly
B. directly
C. linearly
D. none of the mentioned
Answer:A
The degree of turbulence increases ………… with the piston speed.
A. indirectly B. directly C. linearly D. none of the mentioned
Explanation: The degree of turbulence is directly proportional to piston speed, hence it increases directly with the piston speed.