Which of the following is the typical carbon concentration range for cast irons?

a. 1.0 wt% - 1.5wt% c
b. 1.0 wt% - 2.0wt% c
c. 2.0 wt% - 3.0wt% c
d. 2.0 wt% - 3.5wt% c
e. 3.0 wt% - 4.0wt% c
f. 3.0 wt% - 4.5wt% c

Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.

Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.