In shell scripts, comment lines begin with a(n) ____.
A. tilde (~) character
B. dollar ($) sign
C. pound (#) symbol
D. exclamation (!) sign
Answer: C
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A section of a two-lane rural highway is to be realigned and replaced by a four-lane highway with a full-depth asphalt pavement. The AADT (both ways) on the existing section can be represented by 500 ESAL. It is expected that construction will be completed 5 years from now. If the traffic growth rate is 5% and the effective CBR of the subgrade on the new alignment is 8.5, determine a suitable depth of the asphalt pavement using the AASHTO method. Take the design life of the pavement as 20 years. The resilient modulus of the asphalt (EAC) is 400,000 lb/in2. Assume mi for the subgrade is 1 and the percent of traffic on the design lane is 45%. Use a reliability level of 90%, a standard deviation of 0.45, and a design serviceability loss of 2.0.
What will be an ideal response?
A 1-MVA substation operates at full load at 0.7 power factor. It is desired to improve the power factor to 0.95 by installing capacitors. Assume that new substation and distribution facilities cost $120 per kVA installed, and capacitors cost $30 per kVA installed.
(a) Calculate the cost of capacitors needed. (b) Find the savings in substation capacity released. (c) Are capacitors economical for releasing the amount of substation capacity?
How does the heating-cycle charge compensator aid the heating cycle?
A) It makes the gas line cold. B) It stores the unneeded refrigerant. C) It fills with hot air. D) It raises the temperature of the refrigerant.
What happens when the hand-off-automatic switch is set in the Hand position?
What will be an ideal response?