When not air-cooled, the heat produced by the motor in a hermetic motor compressor assembly is eliminated by refrigerant gas.
A compressor in the refrigerant is said to be a hermetically sealed compressor when both the compressor and motor operate on the same shaft and both are enclosed in a common casing. These kinds of compressors eliminate the use of a crankshaft seal, which is vital in open-type compressors to prevent leakage of refrigerant.
Typical refrigerants include gases such as fluorocarbons, which are chemical compounds of fluorine and carbon. They were formed mainly as refrigerant gases to be used for air conditioners and refrigerators.
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When a dielectric is inserted between plates of capacitor stored energy, will it increase or decrease?
When the charge on a capacitor plate increases while it is still connected to the battery, or when a dielectric slab is inserted between the plates, the capacitance (C) increases, the potential difference (V) between the plates stays constant, and the amount of energy stored in the capacitor increases.
Does a capacitor's dielectric improve the amount of energy stored?The dielectric is attracted towards the capacitor's plates by the charges on its surface, so it tends to stay inside the device. The capacitor reduces the quantity of energy retained by lowering the dielectric between the plates.
Does including a dielectric result in more energy?Similar to C, the capacitor's potential energy reacts to changes. With the addition of a dielectric, C rises in direct proportion to K. Additionally, as the dielectric constant, K, rises, Q and stored potential energy do as well.
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in the following amplifier circuit, the input signal is v. this is a 1khz sinusoidal signal with a peak amplitude of 1.5 v. which one of the options could be the output signal, v o (t)? assume an ideal op-amp. dc power supplies are used to power up the op-amp.
Signals will get distorted if an op amp is used over its slew rate limit.
How do you figure out an op-output amp's voltage?This is amplifier circuit a 1.5 v peak-to-peak 1 kHz sinusoidal waveform.might represent the output signal, v o (t)
Equations. AV input Equals V out
Op-amp inversion: A = - R2/R1
A = 1 + R2/R1 for non-inverting op-amps.
The input resistance of a perfect op amp is infinite.
Signals will get distorted if an op amp is used over its slew rate limit. The sine wave example provides the clearest illustration of this. At the zero crossing point, voltage changes at their fastest pace.
1/(40pi) * cos(2000pi*t - 1)
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If an op amp is used at a rate higher than its slew rate limit, signals will become distorted assuming an ideal op-amp. dc power supplies are used to power up the op-amp.
What is an enhancer circuit?A circuit known as an electrical or electronic amplifier generates an output signal that is a larger replica of its input by utilizing an external power supply. A speaker's voice is amplified with an audio amplifier, an easily recognizable application, to make it easier for them to be heard in large spaces.
What purpose does the amplifier circuit serve?In marine automation, control, and other electronic circuits, amplifiers or operational amplifiers (op-amps) are frequently utilized. Typically, a voltage or a current signal serves as the applied input signal. An amplifier's goal is to produce a signal that is larger than the input signal.
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Which of the following statements is valid? Assume that variable arr is an array of i integers and that the following is true:
arr[0] != arr[i] for all values from 1 through i - 1
The correct answer is there is no need for a prerequisite; the method will always function as intended.
There is no need for a prerequisite; the method will always function as intended. An array with 10 entries is created by the declaration that follows: values for double[] = new double[10]; Any integer between 0 and 9 can serve as an index. Instead of creating many variables to represent different values, array variables are an option. An array variable's format can either be a collection of one or more name-value pairs or a list of distinct values (an array list) (a JSON array ). Just include the assignment operator (=), the variable name to which the value should be transferred, the array name, and the element index in parentheses. Two-dimensional arrays can be used to hold many records and various fields.
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from a psychodynamic perspective, the lifespan development of a couple or family is substantially impacted by the early development of the individuals within the system. as such, which one of the following statements is true?
The psychological forces and impulses that people possess that explain why people behave and how they become who they are are the subject of psychodynamic theories.
The concepts come from Sigmund Freud's psychoanalysis, which placed a strong emphasis on the unconscious mind as the root of psychological suffering and dysfunction. A childhood trauma that has since caused this tendency, obsessive hand washing, may be connected. An anxious experience from infancy may be the root of nail biting. A childhood occurrence that made a youngster afraid of being alone in a public place could lead to adult agoraphobia. explanation or interpretation of behavior or mental states in terms of mental or emotional forces or processes. The psychology of mental or emotional forces or processes that develop, particularly in early life, and their consequences on behavior and mental states.
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Donna makes a website feature that will recommend books to users by asking questions about their likes and dislikes. There's a bug in the program, so she decides to ask her friend Martha to look over her code. Before Martha looks at the code, she asks Donna to describe it. Which of the following parts of Donna's description is an abstraction? Select TWO answers. A "The ask method prints out a multiple choice question to the user and then records the user's answer in a list." B "After all the questions have been asked, the match method retrieves three book recommendations for each answer selected and puts them in a new list." С "From there, the match method uses the selection sort algorithm to sort the list of recommendations D "Finally, the match method uses a loop to compare each item in the list to the previous item. If there are two items that are the same, that item is printed out for the user to see."
The "ask method" prints a multiple-choice question to the user, who subsequently enters a response, which is then listed.The match approach "retrieves three reading material for each response picked and adds them to a new list after all questions have been answered."
Explanation: Without going into great depth on how the code works, each of these descriptions provide Martha a general understanding of what the code accomplishes.
Which one of the following procedural abstraction qualities is desired?Code that is more understandable and reusable is one of procedural abstraction's desirable qualities.Choice "A" suggests that the software is more reusable because it is only confined to the extent that the users' needs dictate.
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It's okay to lift a short-wheelbase vehicle by the leaf springs or spring hangers.
Answer:
Not a good idea.
Explanation:
You don't want the vehicle moving while it's on a lift, so do not lift it up on a moving part.
which of the following is the correct formula for the unweighted center of gravity method for evaluating location alternatives?
X-bar = sigma(Xi) / n, Y-bar = sigma(Yi) / n.
A center de gravity method is what?The center of gravity approach is a way to choose a distribution center where the cost of distribution is kept to a minimum.It is a technique for locating a facility such that transportation expenses or transit time to different locations are kept to a minimum.Clustering is the term used to describe when businesses locate close to other comparable businesses.
How is the centre of gravity is the point determined?The gravity center is determined by adding the weight/volume average value times this same distance times that volume segment multiplied by the weight.
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