Tech B is correct: In a four-stroke engine, the piston reaches TDC twice per cycle, and the air-fuel mixture is ignited once every two strokes.
In a four-stroke engine, the piston travels to Top Dead Center (TDC) two times to complete the entire cycle.
During the first stroke (intake), the air-fuel mixture is drawn into the cylinder, and during the fourth stroke (power), the ignited air-fuel mixture produces power and the piston again reaches TDC.
This means that the piston reaches TDC twice during one complete cycle.
Additionally, Tech B is also correct in stating that the air-fuel mixture is ignited once every two strokes.
The ignition happens during the power stroke (fourth stroke) after the compression stroke (third stroke).
Hence, tech B is correct.
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Complete question:
Tech A says that in a four-stroke engine, the piston travels to TDC four times to complete the cycle. Tech B says that in a four-stroke engine, the air-fuel mixture is ignited once every two strokes. Who is correct
jumble letters for WROBN plsss answer
Answer:
brown.
Explanation:
it could be brown.
The team needs to choose a primary view for the part drawing. Three team members make suggestions:
- Team member 1 suggests an orthographic top view because that is how the plans for the part were submitted.
- Team member 2 suggests an isometric view showing side details that were documented within the submitted plans.
- Team member 3 suggests all three orthogonal views should be presented as the primary view.
What is the best way to proceed?
Answer choices below:
Answer:
Option 1
Explanation:
As the team has already submitted the plans for the part drawing, the best way to proceed would be how it was given in the plans. Hence, the option to be selected :
Team member 1 suggests an orthographic top view because that is how the plans for the part were submitted.Answer:
The first option
Explanation:
Team member 1 suggests an orthographic top view because that is how the plans for the part were submitted.
Which of the following is defined as the progression of Ideas leading to the final delivery of a product?
O design
O feasibility
O schematics
O optimization
The progression of ideas leading to the final delivery of a product is in option D optimization.
What is optimization?Optimization means upgrading something or making it best. The process of making the best effective use of a situation or resource.
Hence, if the product is going to shape to its final form, then it will go through the process of optimization.
Hence, option D is true.
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A motor car shaft consists of a steel tube 30 mm internal diameter and 4 mm thick. The engine develops 10 kW at 2000 r.p.m. Find the maximum shear stress in the tube when the power is transmitted through a 4: 1 gearing.
The maximum shear stress in the tube when the power is transmitted through a 4: 1 gearing is 28.98 MPa.
What is power?Power is the energy transferred per unit time.
Torque is find out by
P = 2πNT/60
10000 = 2π x 2000 x T / 60
T =47.74 N.m
The gear ratio Ne / Ns =4/1
Ns =2000/4 = 500
Ts =Ps x 60/(2π x 500)
Ts =190.96 N.m
Maximum shear stress τ = 16/π x (T / (d₀⁴ - d₁⁴))
τ max =T/J x D/2
where d₁ = 30mm = 0.03 m
d₀ = 30 +(2x 4) = 38mm =0.038 m
Substitute the values into the equation, we get
τ max = 16 x 190.96 x 0.038 /π x (0.038⁴ - 0.03⁴)
τ max = 28.98 MPa.
Thus, the maximum shear stress in the tube is 28.98 MPa.
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You measure the length of a short pipe nipple that must be cut and arrive at the fraction 28/32 inch. reduce this fraction to its lowest terms. this fraction, expressed in its lowest terms, is inch.
Answer:
7 8 inch
Explanation:
Which component of the enterprise platform will help the company capture, curate, and consume customer information to improve their services?
Data and insight is the component of the enterprise platform will help the company capture customer information.
What is Data and insight?
These are the data and knowledge gotten from analysis of customer's information in a business.
This enterprise platform is very important as it helps the organization to improve their services
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Is it possible to create an iron man suit if yes what do i need to build it
Answer: Money, Jesus, Metal, and an infinity stone gold-titanium alloy.
Explanation: yes
Technician a says that the intake valve is closed during the power stroke. technician b says that the exhaust valve is closed during the compression stroke. who is right?
Answer:
trick question - they are both right.
Explanation:
Both valves are closed during compression and power stroke or both strokes would be useless.
if you were to create your own watershed using materials from your house, what materials would you need, and why would you need these materials to create a watershed?
Answer:
A pan (baking)
Newspaper
Cloth
(colored) Water
A binder (to elevate one side of the pan)
Explanation:
hope this helps:)
if all other elements in a hydraulic elevator system remain the same what would the effect of increasing the size of the oil line
if all other elements in a hydraulic elevator system remain the same the rate of flow will increase and this would have effect on the increasing the size of the oil line.
What happens if hydraulic pressure is too high?When a given pressure is found to be too high, the system is said to make use of the excessive input energy and the fluid is said to be overheat and it is one that can produce great danger to humans.
Therefore, the effect of increasing the size of the oil line is that rate of flow will increase and pose real threat.
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1. Explain the difference between energy and power (2)
Explanation:
Energy is what makes change happen and can be transferred form one object to another. Energy can also be transformed from one form to another. Power is the rate at which energy is transferred. It is not energy but is often confused with energy.
Answer:
• Energy is the ability to do work, and it can be transferred from one body (or system) to another, but is always conserved.
• Power is the amount of energy transferred per unit time.
Hope this helps!
Not all manufacturers use a brake lining wear indicator. select one: true false
Answer:
it is true
Explanation:
I don’t know why but maybe it’s because they just want you to pay for more than you goes?
what would it be like if all your friends were exactly the same
Answer:
Boring, since they would have the same personality, name, and occupation... it would be like doing the same thing every day or always talking to the same person. It would be impossible to figure out who is who since their looks would be the same as well. Although they might be fun to hang around with them if they had the same humor as you, or liked doing the same activities.
Explanation:
hope this helps:)
A group of friends that are identical in every manner would prevent opportunities for personal development and learning, but having friends with similar interests and values might foster a feeling of community and shared experiences.
Thus, Lack of diversity would limit opportunities for new viewpoints, original ideas, and varied experiences. There might not be enough intellectual and emotional stimulation and repetitious conversations and exchanges.
Because everyone would address problems and obstacles in the same way, life might become predictable and static.
Although conflicts and disagreements may be less frequent, the lack of diverse opinions may make it more difficult to come up with original solutions.
Thus, A group of friends that are identical in every manner would prevent opportunities for personal development and learning, but having friends with similar interests and values might foster a feeling of community and shared experiences.
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250 volts are applied to a toaster oven which draws a current of 12 A.
What is the toaster oven's resistance?
Answer:
20.833 ohms
Explanation:
V = IR re-arrange
V/I = R
250 / 12 = 20.833 ( 20 5/6)
automotive engineering essay
Answer:
Explanation:
Automotive Engineering is one of the most challenging and comprehensive fields of engineering today. The automotive sector has come a long way since the age of steam powered flat engines to the age of fast racing Formula 1 car, light and heavy commercial vehicles with lots of technological developments being done every day. “A good scientist is a person with original ideas. A good engineer is a person who makes a design that works with as few original ideas as possible”.
Engineering has been my passion from the start. I took the first step to become an engineer by securing 93.2% in SSC and 82.8% in HSC. I also secured 8259th rank among 10 lakhs students in AIEEE and 6979th rank among 4.7 lakhs in JEE in 2010 so that I could get a seat in one…show more content…
Additionally, Germany avails the advantages of securing the best of knowledge, quality of education, and above all the international exposure. The quality of German Mechanical Engineering has always been much vaunted. The research carried out on structural design of vehicles, alternative and electrified vehicle propulsion at the University is appealing. The breadth and depth of the courses coupled with a stimulating research environment seem to me the right mix for seminal work and pioneering research. I believe that with variety of courses offered and with highly knowledgeable faculty and excellent facilities, the University will provide a perfect environment to focus all my resources towards my goal.
In summary, I am fully committed to a career in automotive sector. My long term goal is to pursue my research interests in the field of automobiles and strive to emerge as an active contributor to the field in the World in general and India in particular. Hence I am eagerly looking forward to spending the next few years in a structured Master’s program in Automotive Engineering. The Mechanical Department of RWTH Aachen has World renowned Faculty besides academically brilliant and motivated graduates in whose association my understanding of the area will be much.
A continuous fiber-reinforced composite is to be produced by dispersing 60 vol% carbon fibers in a polycarbonate matrix. if the stress in the polycarbonate matrix when the carbon fibers fail is 45 mpa, the longitudinal elastic modulus of the composite using rule of mixture is
Answer:
Explanation:
A continuous fiber-reinforced composite is to be produced by dispersing 60 vol% carbon fibers in a polycarbonate matrix. if the stress in the polycarbonate matrix when the carbon fibers fail is 45 mpa, the longitudinal elastic modulus of the composite using rule of mixture
8. A voltmeter measures a voltage drop of 600 V across a heating element while an
ammeter reads the current through it as 2.0 A. What is the resistance of the
heating coil.
Answer:
How do I calculate voltage drop?
To calculate voltage drop, E, across a component, you need to know the resistance of the component and the current thru it. Ohm's Law is E=I⋅R , which tells us to then multiply I by R . E is the voltage across the component also known as voltage drop
Explanation:
The SI unit for the diffusion coefficient is m2/s, but older texts sometimes report diffusion coefficients in units of in2/min. What is the value of a diffusion coefficient of 18.5 in2/min expressed in SI units
The value of a diffusion coefficient of 18.5 in2/min expressed in SI units is 0.000198924 m^2/s.
What is SI unit?The International System of Units can be regarded as a body that provide a universal scientific unit to all units.
Since
[tex]1in^2 = 1.07527*10^-5 m^2/s[/tex]
Then 18.5 in^2/min= 0.000198924 m^2/s
Therefore, the value of a diffusion coefficient of 18.5 in2/min expressed in SI units is 0.000198924 m^2/s.
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When did Brainly come out and who was the first person on there besides the makers?
Please don’t give me lame answers or they will get reported
Thank you! :)
Answer:
i have actually been wondering this also. its a really great tool to have
Explanation:
Answer:
BRAINLY EXPERT✓
Explanation:
Initially called Zidane. pl, the company was founded in 2009 in Poland by Michał Borkowski (currently chief executive officer), Tomasz Kraus, and Łukasz Haluch. The first million unique monthly users were achieved within 6 months after the release.[5]
In January 2011, the company founded Znanija.com, the first international project dedicated to Russian language speakers.[6] Several other versions in multiple languages for the following markets included Turkey (eodev.com), Latin America and Spain (brain. lat), and Brazil (brainly.com.br).
Explain the surprising realization scientists are making about bacteria and what danino hopes to eventually be able to do using bacteria. hurry 30 points
The surprising realization scientists are making about bacteria and what danino hopes to eventually be able to do using bacteria are the Corallococcus exercitus.
Who discovered the bacteria?Antonie van Leeuwenhoek used single-lens microscopes, which he made, to make the primary observations of micro organism and protozoa. His full-size studies at the boom of small animals inclusive of fleas, mussels, and eels helped disprove the concept of spontaneous era of life.
Researchers found a brand new species of alga in vital New York and named it Gormaniella terricola, with the genus named after poet Amanda Gorman.
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when servicing piston rods and pins it is important to always
Answer:
Pistons should be inspected and measured.
Explanation:
What are the two (2) different design elements of scratch?
Answer: There is four elements of Scratch. The stage, the sprites, the script and the programming palette.
Explanation:
Please let me know the answer up to three decimals
Answer: 00.9666
Explanation: I don't know if this is the correct answer but, this question should've been under "Mathematics" and not under "Engineering" hope this helps. Have a good day/night ^^
A cutting tool wears out with a time to failure that is normally distributed with a mean of 10 working days and a standard deviation of 2.5 days. (a) determine its design life for a reliability of 0.99. (b) find the reliability if the tool is replaced every day; every two days; every five days. (c) determine the probability that the cutting tool will last one more day given it has been in use for 5 days.
Using the normalized distribution it is possible to calculate the value of Z score and for cases where there is a 99% chance, so Zscore is -3.6 and X= 16.45.
What are the types of probability distribution?This curve determines the probability of the event associated with it occurring. The Gaussian distribution is the most common, hence it is known as the Normal Distribution. The area under the distribution curve is always equal to 1.0.
The formula for this distribution can be described as:
[tex]Z score = \frac{x-\mu}{\sigma}[/tex]
Where:
x= Probability density functionμ= Meanσ= Standard DeviationIn this case,
[tex]Z score =\frac{1-10}{2.5} \\Z score = -3.6[/tex]
P-value from Z-Table will be P(x<1) = 0.00015911
For 99% we have that z will be 2.58, so
[tex]2.58=\frac{x-10}{2.5}\\x = 16.45[/tex]
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Question 2: write a program for smart garage system using:
2 IR obstacle sensor, relay & LCD.
The garage have 25 space to 25 car & have also two doors entrance & exist; first IR sensor on
entrance and second IR sensor on exist. This system counts how many empty spaces for parking.
When the car enters the sensor on entrance activate & the counter decreases, when the car exists the
sensor on exist activate & the counter increase. Use LCD to print how many empty spaces in the
garage, and finally when the garage full the LCD must print this message "Garage Full "and the
relay close to shut down the entrance door.
Answer:
C
Explanation:
Tech A says that blowby gases occur when compression and combustion gases leak past the piston rings. Tech B says that the upper two piston rings are oil control rings. Who is correct?
Tech A says that blowby gases occur when compression and combustion gases leak past the piston rings is correct while tech B is also correct.
What causes Blowby gasses?A lot of blowby occurs takes place if exhaust gas enters the crankcase by passing via or past the piston rings.
Note that other sources are turbochargers as Blowby passes the piston rings, it brings in pressure and combustion gases into the oil pan.
Therefore, Tech A says that blowby gases occur when compression and combustion gases leak past the piston rings is correct while tech B is also correct.
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What is the factor of safety of a member whose actual stress is 22 ksi and allowable stress is 30 ksi
Factor of safety can be calculated by capacity/demand or allowable/actual. So in this case your answer would be 30/22 = 1.36
51.
What is a subpanel?
Answer:
im pretty sure its answer D
Explanation:
If the standpipe system has an automatic water supply or is part of a combined system, a _______ should go to the exterior of the building and provide a means to safely remove the system water so it will not be a hazard
When the standpipe system has an automatic water supply or is part of a combined system, a main drain should go to the exterior of the building.
What is Standpipe systems?This is known to be a system that is made of piping and hose linkage tht is often installed in all of a building to give reliable water for use.
Note that in the above scenario, When the standpipe system has an automatic water supply or is part of a combined system, a main drain should go to the exterior of the building.
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Why do we study National studies
Answer:
It’s so we can then understand other cultures and other ways that people do things or we can also be prepared for what a country that we have not been to yet is going to relatively be like. This can also help with vacation planning.
Explanation:
it can also help us understand different people from different cultures.