What is one advantage and one disadvantage of frequency control?
Fill in the blank(s) with the appropriate word(s).
Frequency control has an advantage over other types of control in that it is very responsive to changes in motor load. The main disadvantage of frequency control is that some amount of resistance must remain in the circuit at all times.
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In modeling this process, assume the passage of sufficient time for the broken egg to return to its initial temperature. What is the origin of the heat transfer of part (e)?
An egg, initially at rest, is dropped onto a concrete surface and breaks. With the egg treated as the system,
(a) What is the sign of W?
(b) What is the sign of 
(c) What is 
(d) What is 
(e) What is the sign of Q?
Identify this component.
A) Accumulator
B) Compressor
C) Receiver-drier
D) Refrigerant filter
Which of these choices are always correct? The repair order is ________.
A) A paper form B) A legal contract C) A communication tool D) Both A and C E) Both A and B
The first Niman Ranch was started in the early 1970s near which major city?
a. Miami c. Phoenix b. San Francisco d. Chicago