Answer:
An assessment is the evaluation or estimation of the nature, quality, or ability of someone or something.
Which of the following statements is correct?
The thermostat controls the operation of the fan motor.
The 1-C contacts control the operation of the fan motor.
The L, M, and H terminals control the speed of the compressor.
Terminals 1 and L1 on the selector switch are electrically the same.
the Answer:
The thermostat controls the operation of the fan motor
Explanation:
Assuming this is a Household HVAC
The thermostat controls the operation of the fan motor, the operation of the heating elements, the compressor, and the flow of refrigerant through the A-coil
Assuming this is an Automotive application
The thermostat controls the operation of the fan motor and the flow of engine coolant
Select the correct answer from each drop-down menu.
Choose the correct phrases to complete the sentences to explain the features of assembly line production.
The assembly line is an example of a
system. The advantage it has over other systems is that it
.
First one options is (custom production, batch production, mass production)
second one options is (enables mass production without significant capital costs,
helps production at the cheapest cost per piece, creates products to individual specifications)
What does video compression do? Choose all that apply. reduces file size removes parts of a frame that change from one frame to the next removes parts of a frame that do not change from one frame to the next speeds uploading and downloading of video
Video compression is the process of encoding a video file in such a way that it consumes less space than the original file and is easier to transmit over the network/Internet.
Video compression is the process of encoding a video file in such a way that it consumes less space than the original file and is easier to transmit over the network or Internet.
What is a data frame?A data structure known as a "Data Frame" arranges data into a 2-dimensional table of rows and columns, much like a spreadsheet. Because they provide a flexible and user-friendly method of storing and interacting with data, a Data Frame is one of the most popular data structures used in contemporary data analytics.
The name and data type of each column is specified in a schema that is part of every Data Frame. Both common data types like StringType and IntegerType as well as Spark-specific data types like StructType can be found in Spark DataFrames. The Data Frame stores missing or incomplete values as null values.
Therefore, Video compression is the process of encoding a video file in such a way that it consumes less space than the original file and is easier to transmit over the network or Internet.
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What are some advantages of making electronic components like transistors increasingly smaller?
Answer:
Dr. Engelbart, who would later help develop the computer mouse and other personal computing technologies, theorized that as electronic circuits were made smaller, their components would get faster, require less power and become cheaper to produce — all at an accelerating pace
4. On wet roads, the chance of hydroplaning increases with the increase of speed.
True
False
Answer:
The answer to the question is True
On wet roads, the chance of hydroplaning increases with the increase of speed. Thus, the given statement is true.
During rainy weather, roads may become slippery and difficult to drive on. Slippery roads may also arise as a result of snow or ice. The fact that the road surface has less traction than normal is what makes it slippery. On slippery roads, it is recommended that drivers slow down to reduce the risk of skidding, sliding, or losing control of their cars, especially when taking turns.
Drivers should also increase their following distance and avoid abrupt braking or accelerating. Drivers should not drive faster than 25 mph on slippery roads, and they should not increase their speed to avoid hydroplaning. Instead, drivers should slow down.
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Question 3
Sometimes when people first hear about the Traveling Salesman problem, they think: "Oh, that's not hard. Start with a city on the map; move to the nearest unvisited city; and then on each subsequent step, move to the nearest still-unvisited city, until you're done." This strategy is called a "greedy strategy": it always goes to the nearest allowed step.
Now consider four cities, all placed along the number line. City A is at point 0, City B at point 2, City C at point 3, and City D at point 10:
A B C D
00-01-02-03-04-05-06-07-08-09-10
Now, start a traveling salesman tour at City B, and use the greedy algorithm to choose your tour of the four cities, beginning and ending at B. How long is the greedy algorithm’s tour?
Answer:
22
Explanation:
The tour length will be the sum of the lengths of its segments. Here, we will figure the length using the greedy algorithm.
__
Starting at B=2, the nearest unvisited city is C=3, a distance of 1.
From C, the nearest unvisited city is A=0, a distance of 3.
From A, the nearest unvisited city is D=10, a distance of 10.
The return trip from D to B is a distance of 8.
The total length of the tour is ...
1 + 3 + 10 + 8 = 22
Which of the following devices is not a networking device?
O Switch
O Hub
O Bridge
O None of these
Explanation:
I thought all of them are networking devices
Why is Math mandatory in engineering?
Answer:
because Engineering focuses largely on designing and developing solutions to problems, and engineers often need to perform equations and calculations as part of the process of developing, building and testing the solutions they design.Explanation:
A programmable integrated circuit (PIC) is another name for a microcontroller.
A. True
B. False
Answer:
true
Explanation:
The on-board computer controls the suspension system based on inputs from?
A. sensors.
B. solenoids.
C. air pressure.
D. hydraulic pressure.
The answer is A. Sensors
Consider street lights that come on automatically. Why is it important that a low amount of current is sent to the base of a transistor, but that the collector and emitter are able to handle a large amount of current? (35 POINTS) Pls help
Answer:
The CdS cell changes the resistance of a circuit depending on the amount of light shining on it.
Explanation:
The most commonly used component in streetlights is called a cadmium sulphide photoresistor, or a CdS cell for short.
<3
In filling bags of nitrogen fertilizer, it is desired to hold the average overfill to as low a value as possible. The lower specification limit is 22.00 kg (48.50 lb), the popu-lation mean weight of the bags is 22.73 kg (50.11 lb), and the population standard deviation is 0.80 kg (1.76 lb). What percentage of the bags contains less than 22 kg? If it is permissible for 5% of the bags to be below 22 kg, what would be the average weight? Assume a normal distribution.
18.14% of the bags contains less than 22 kg
What is z score?Z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:
z = (raw score - mean) / standard deviation
Given that:
Mean = 22.73 kg, standard deviation = 0.80 kg
a) For <22:
z = (22 - 22.73)/0.8 = -0.91
P(z < -0.91) = 0.1814
18.14% of the bags contains less than 22 kg
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Calculate the charge stored in a 2 microFarads capacitor with a voltage of 50V applied on it
Answer:
Charge = 0.1 Coulmbs
Explanation:
Q=CV
Q being the charge in coulombs
C being the capacitance
V being the voltage
You will multiply the capacitance value by the voltage and that equals your charge in coulombs
(50V) * (2mF) = 0.1 Coulombs
Electric Charge itself is defined as a property of matter to experience a force when placed in a CHANGING magnetic field.
I need to get answer for it
Answer:
A is the answer i guess
a is in a normal position and is letting him stand on the ground so I guess A is the answer
Training credentials are used to confirm
O skill development
O electrical expertise
O age and educational background
O problem-solving ability
Training credentials are used to confirm an individual's: A. skill development.
What is a training credential?A training credential can be defined as a formally written and signed document that is typically issued by a training institute to a trainee after learning and gaining the requisite knowledge over a specific period of time.
This ultimately implies that, a training credential are designed and developed to confirm that a particular trainee has acquired and possesses a skill, knowledge, understanding, etc.
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Develop rough sketches of ideas bridge
Answer:
look online
Explanation:
What safety concerns must be addressed before
welding on a large assembly outside of a welding
booth?
Answer:
the clothing you wear, what's in the air (gases), surrounding and weather
In a typical American building, most modern lighting systems must use what voltage?
A. S V
B. 48 V
C. 120 V
D. 250 V
Answer:
Typically, either 110-volt AC (110V) or 220-volt AC (220V) is used. Most countries use 50Hz (50 Hertz or 50 cycles per second) as their AC frequency. Only a handful use 60Hz. The standard in the United States is 120V and 60Hz AC electricity.
Find the altitude of the right cylinder of maximum convex surface that can be inscribed in a given sphere.
Answer:
The radius 4 is maximum in convex surface
What is one unit used to measure the base dimensions, or fundamental quantities, of an object?
A. mole
B. kelvin
C. hertz
D. volt
Answer:
Volt is the correct answer
How many 1/4" screws must be used to secure a connection of 8 inch duct?
3
5
4
6
Answer:
3
Explanation:
you multiply 1/4 x a = 8
a= 3
The __________________ refers to the main screen of the computer.
Answer:
Desktop
Explain:
Desktop refers to the main screen of the computer. It is the first screen you see after logging in. The desktop’s appearance can vary widely because it is highly customizable, but generally desktops will feature a large image, icons, and a taskbar(covered later on this page).
Which of the following will create a screen object? Python
screen = turtle()
screen = turtle.Screen()
screen = screen.Turtle()
screen = turtle.Turtle()
Answer:
what?
Explanation:
What does a restriction in the fuel return line cause?
Answer:
Carburetor flooding, engine stalling, and hard starting
Explanation:
If the fuel return hose becomes blocked or kinked it may cause the carburetor to flood from excessive fuel or pressure buildup.
write a brief design of bridge
Answer:Brief introduction to your bridge project (Design brief): 100 words. ... The purpose of this bridge is to fit a 500mm long by 100mm gap in an area where stormy
Explanation:Brief introduction to your bridge project (Design brief): 100 words. ... The purpose of this bridge is to fit a 500mm long by 100mm gap in an area where stormy
If the voltage increases in a circuit, what happens to the current (amperes) if the resistance stays
the same?
A) Decreases
C) Increases
B) Remains the same
D) Cannot be determined
Answer:
b remains the same
Explanation:
voltage and amps have no connection
the electricity used to rin your clothes dryer is normally 220V 18-24A
the voltage in your car's battery is usually 12V 20-30A
see they are approximately the same amperage but very different voltage
The enforcement of OSHA standards is provided by federal and state
O master electricians
O lawmakers
O tax collectors
O safety inspectors
Answer:
Explanation:
Enforcing OSHA, Occupational Safety and Health Administration, standards is not a job for electricians, lawmakers or tax collectors. The right answer is safety inspectors.
A 3 mm diameter and 5 m long electric wire is tightly wrapped with a 2 mm thick plastic cover whose thermal conductivity is k= 0.15 W/m°C. Electrical measurements indicates that a current of 10A and voltage drop of 8V along the wire. If the insulated wire is exposed to a medium at T∞= 30C with h= 12 W/m2°C, determine the temperature at the interface of the wire and the plastic cover in steady operation. Also, determine whether doubling the thickness of the plastic cover will increase or decrease this interface temperature.
Answer:
According to the problem the diameter of the wire , r1
The outer diameter after wrapping , r2 = 7mm
The thickness of the plastic cover , t
Length of the wire = I
The Thermal conductivity of cover = = k
Current pass through the wire = I
Due to current passing voltage dropped, is V
The temperature = T
Heat transfer coefficient = h
The rate at which the heat is generated in the wire,
q= VI = 8 * 10 =80 Watt
Now for calculating the resistance for each medium .
x1 = 1/hA2 = 1/2 x 2π x 0.0035 x 5 = 0.76 K/ W
x2 = ln r2/r1/2πkl = ln 0.0035/0.0015 /2π 0.15 x 5 = 0.179 K/W
Therefore the total resistance ,
R = x1+x2 = 0.76 +0.179 = 0.939 K/W
Now to calculate the temperature at the interface of the wire,
q= R(T - t)
=> 80 = 0.939(T -30- 273)
T = 378.12 K
Critical radius is r(critical)
r(critical) = K/h = 0.15/12 = 0.0125 m or 12.5 mm
A half-wave rectifier circuit with a 1 kΩ load operates from a 120 V (rms value), 60 Hz household supply through a 10-to-1 step-down transformer. (For sine wave, V rms= V pk/√2 .) Assume the diode voltage is 0.7 V at forward bias. (a) What is the peak voltage of the rectified output? (b) For What fraction of the cycle does the diode conduct (calculate the percentage)?
Answer:
(a) 16.27 Vpk
(b) 48.7%
Explanation:
The transformer is assumed to be an ideal 10:1 voltage divider with no internal impedance. The diode is assumed to be modeled in the forward direction by a perfect 0.7 V voltage drop with no internal impedance. That means the frequency of the supply voltage is irrelevant.
__
(a)The peak voltage will be 0.7 V less than the transformer secondary peak voltage:
((120 V)√2)/10 -0.7 V ≈ 16.27 V
__
(b)The fraction of the amplitude for which the diode is non-conducting is ...
0.7/(12√2) ≈ 0.041248
The period of conduction is symmetrical about the peak of the waveform, so it is convenient to use the arccos function to find the (half) conduction angle:
arccos(0.041248) ≈ 87.64°
As a fraction of half the cycle, this is ...
conduction fraction ≈ 87.64°/180° ≈ 48.7%
In a dual zone climate control system, the ducts and airflow are split. Which of the following are used to control the temperatures
A. Evaporators
B. Heater cores
C. Compressors
D. Air mix doors
Answer:
D. Air mix doors
Explanation:
Air doorways are used to control the temperature in the dual-zone climate control system.