Most manufacturers of vehicles equipped with diesel engines allow what type of biodiesel?
A) B100 B) B80 C) B5 D) B20
C
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The following data are from the U.S. EPA AP-42 emission factors for malt beverages. For a steam-heated brewers grain dryer, CO = 0.22, CO2 = 53, and VOC (ethanol) = 0.73. The units for the emission factors in the EPA tables are in lbs of pollutant per 1000 barrels (bbl). A brewery produces about 7 million barrels of product per year. Estimate the emissions of
a. Kg of carbon monoxide per year from fermenter venting b. Kg of carbon dioxide per year from fermenter venting c. Kg of VOCs (ethanol) per year from fermenter venting What will be an ideal response?
To prevent the normal motor starting current from affecting the fuse operation, non-timedelay fuses can be sized at _____.
a. 100% of the motor full-load current b. 200% of the motor full-load current c. 300% of the motor full-load current d. 400% of the motor full-load current
The system bonding jumper for a system that supplies more than one disconnecting means is sized
A. based on the full-load current rating of the transformer secondary windings. B. based on the total circular mil area of the derived ungrounded conductors.
For the circuit shown in Figure P5.41, assume that switch S2 is always held open and that switch S1 is closed until being opened at t = 0. Subsequently, S1 closes at t = 3? and remains closed. Also assume DC steady-state conditions for t < 0 and
R1 = 5?, R2 = 4?, R3 = 3?, R4 = 6?, and
C1 = C2 = 4F.
a. Find the capacitor voltage vC at t = 0+.
b. Find vC for 0 < t < 3? .
c. Use part b to find the capacitor voltage vC at t = 3? , and use it to find vC for t > 3? .
d. Compare the two time constants for 0 < t < 3? and t > 3? .
e. Sketch vC for all time.
