Define command line history and describe its usage.
What will be an ideal response?
Often, you find yourself entering the same command several times within a short period of time. Most shells keep a list of your recently used commands and allow you to recall a command without retyping it. You can access the command history with the up and down arrow keys. Pressing the up arrow key once recalls the most recently used command. Pressing the up arrow key twice recalls the second most recently used command. Each time you press the up arrow key, you recall an older command. Each time you press the down arrow key, you scroll forward in the command history. When you locate the command you want to execute, press Enter. This capability can save time and frustration when you need to enter the same or similar commands in one session.
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Answer the following statement(s) true (T) or false (F)
1. The synchronous motor will run at a variable speed from no load to full load. 2. The rotor of a synchronous motor contains a set of type “A” squirrel-cage bars. 3. The power factor of the synchronous motor can be changed by adjusting the DC excitation current to the rotor. 4. In coils designed for AC current, the resistance of the wire is used to limit the flow of current. 5. Many large synchronous motors use a brushless exciter instead of slip rings and brushes.
?What can cause the filler wire to form a bird's nest?
A. ?Too high of a wire feed speed and too low of an amperage setting. B. ?The wire not going through the outfeed side conduit. C. ?Too loose of a tension on the wire feed rollers. D. ?The wrong type of wire feed rollers for the wire being used.
The demand for both all food and individual foods is typically price elastic
Indicate whether the statement is true or false
Which of the following would you expect to have the highest leaf area index?
A) alfalfa just before harvest B) corn, knee high C) corn three weeks after planting D) bare fallowed area E) either B or C (equal)