A 254° arc has a radius of 10.5 centimeters. Find the length of the arc. Round the answer to the nearer hundredth centimeter.
Fill in the blank(s) with the appropriate word(s).
46.55 cm
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While performing steel-erection work, it is best to wear _____.
a. shirts with open pockets for easy access b. short-sleeve shirts to keep your arms free c. long-sleeved shirts d. an unbuttoned shirt over a t-shirt
Which type of hammer would NOT be found in a truck technician's tool box?
A. ball peen B. cross peen C. claw D. rubber mallet
Assuming the compounds form ideal solutions, what is the flow rate of C in the exiting stream?
A feed stream of 50 mol/minof A and 50 mol/min of B at 500 K enter an adiabatic steady state reactor. The reaction is A + B ? C and occurs in the liquid phase. The stream leaving the reactor is at equilibrium. CP = 80 J/mol•K for compound C, and ?CP for the reaction is 0. At 298.15 K,?HR0 = -13 kJ/mol and ?GR0 = -20 kJ/mol.
Determine the proper settings for proportional gain and reset time on a two-mode controller using the Ziegler-Nichols Continuous Cycling method, the process identification curve in Figure 12-4a, and Table 12-4b.
Figure 12-4a
Controller Mode
Proportional Gain Kc
Proportional Band PB
Reset Time Ti (Minutes per Repeat)
Reset Rate Tr (Repeats per Minute)
Derivative Time Td
P
0.5 Gu
2 PBu
N/A
N/A
N/A
PI
0.45 Gu
2.2 PBu
Pu/1.2
1.2/Pu
N/A
PID
0.6 Gu
1.7 PBu
0.5 Pu
2/Pu
Pu/8
Table 12-4b
What will be an ideal response?