Calculate the following:
An inductive load consists of a resistance and an inductive reactance connected in
series. The circuit is excited by a full-wave ac/dc SCR converter. The ac voltage
(input to the converter) is 120 V (rms), and the circuit resistance is 5 ?. At a
triggering angle of 30o, the load current is continuous.
a. Average voltage across the load
b. Average load current
c. rms voltage across the load
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The velocity of sound in air is equal to 1,130ft/s. Calculate the wavelength of a 2KHz signal.
Fill in the blank(s) with the appropriate word(s).
Companies have attempted to isolate a bacterial protein-degrading enzyme from soil that could survive a complete cycle in a clothes washer. The companies had to learn how to grow these organisms under conditions that simulated a washing machine full of water and detergent. Why? Scientists reasoned that if the organisms could survive and grow under these conditions then the enzymes inside them could survive these conditions. List all of the conditions that this enzyme would have to be able to survive to work in a washing machine. Design a procedure for how this organism might be isolated.
What will be an ideal response?
Discuss the origin of natural gas
What will be an ideal response?
Which of the following problems can be caused by restrictions in the capillary tubes?
A) Low suction line temperature B) Low box temperature C) High suction pressure D) Low suction pressure