When a Williams type exhaust brake is fully actuated, which of the following is true of the exhaust flow area through the brake?
A. zero flow
B. minimal flow
C. moderate flow
D. maximum flow
Answer: B
You might also like to view...
In what way are wildlife managers like detectives?
What will be an ideal response?
Air at 52°C, 101.3 kPa, and 20 percent relative humidity enters a 5-cm-diameter tube with an average velocity of 6 m/s. The tube inner surface is wetted uniformly with water, whose vapor pressure at 52°C is 13.6 kPa. While the temperature and pressure of air remain constant, the partial pressure of vapor in the outlet air is increased to 10 kPa. Detemine (a) the average mass transfer coefficient in m/s, (b) the log-mean driving force for mass transfer in molar concentration units, (c) the water evaporation rate in kg/h, and (d) the length of the tube.
What will be an ideal response?
Two technicians are discussing variable valve timing. Technician A says that changing the exhaust valve timing helps reduce exhaust emissions. Technician B says that changing the intake valve timing helps increase low-speed torque. Who is right?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
What are some important challenges confronting range managers in the twenty-first century?
What will be an ideal response?