Answer:
a) Copper corrosion is prevented by an external current source that provides a condition around the copper that halts the rust through current cathodic protection
Due to the location of the pipeline, an material such as graphite, titanium, or niobium can be used which lasts longer that zinc can be used for longevity of the protection
b) The positive side of the output DC terminals are attached to the anodes such as graphite, while the negative terminals are connected to the copper pipe to be protected
Explanation:
Making the protected metal the cathode will make the metal be the source of electrons into the reaction taking place such that the release of the positive metal ions that results in disintegration takes place at the anode and as such the protected metal made the cathode, to which the negative terminal of the battery is attached is protected.
Steam enters an adiabatic turbine at 8 MPa and 500 C with a mass flow rate of 3 kg/s andleaves at 30 kPa.The isentropic efficiency of the turbine is 0.90. Neglecting the kinetic energy change of the steam, determine (a) the tem-perature at the turbine exit and (b) the power output of theturbine
Answer:
(a) The exit temperature = 69.1°C
(b) The power output = 8.3 MW
Explanation:
(a) The enthalpy of steam at 8 MPa and 500°C is given (from online sources) as h₁ = 3399 kJ/kg
The exit temperature = The saturation temperature at 30 kPa = T₄ = 69.096 + 273.15 = 342.246 K
The exit temperature = 69.1°C
(b) The mass flow rate = 3 kg/s
The isentropic efficiency = 0.9 = (h₁ - h₂)/(h₁ - h₂[tex]_s[/tex])
s₁ = 6.727 kJ/kgK
h₂[tex]_s[/tex] = 289.229+ 2335.32* (6.8235 - 6.727 )/6.8235 = 322.26 kJ/kg
Therefore, h₂ = h₁ - (h₁ - h₂[tex]_s[/tex])*0.9
h₂ = 3399 - (3399 - 322.26 )*0.9 = 629.934 kJ/kg
The power output = [tex]\dot m[/tex](h₁ - h₂) = 3 *(3399 - 629.934) = 8307.2 kJ/s =
8.3 MW.
how many types of engineering specialist are there?
There are now six major branches of engineering: Mechanical, Chemical, Civil, Electrical, Management, and Geotechnical, and literally hundreds of different subcategories of engineering under each branch.
There are about 40 types of engineering specialists
Your friend wears earbuds while driving to school each day. Is this safe? Is it legal? Explain why or why not.
Answer:
Its not safe but it isn't illegal. Its not safe because if their volume was up they wouldn't be able to hear if someone is honking at them or listen to emergency vehicles. They would be oblivious to what's going on around them.
Explanation:
im an amazing guy <3
Prescription eye protection suitable for an electrician should always include a. a safety strap b. soft nose guards c. side shields d. tinted lenses
Answer:
The correct option is;
Side shields
Explanation:
Electricians working at a construction site are exposed to arc flashes and sparks which can enter into the eyes causing painful sensation as such a prescription eye protection suitable for an electrician according to OSHA regulations the employer should ensure that the electrician makes use of eye protection that has side protection in situations that include hazards from flying objects.
You should continuously work to enhance your skills and knowledge .
Answer:
Improve Your Writing
You may need to improve your ability to express yourself in writing.
To some degree, most organisations rely on the accurate transfer of information and that calls for the accurate use of language. When speaking, most people make multiple errors of grammar and vocabulary, and nobody seems to mind. But when you are doing business at work, then the business agreement is usually in the form of a written document; and that document has to be worded properly.
How would you rate your ability to express yourself properly in writing? Are you a good writer or do you lack knowledge of grammar, punctuation, logic and rhetoric?
If you are not as good at writing as you need to be, then study grammar, study punctuation, logic and rhetoric.
Start by buying a copy of a book called 'Rex Barks' by Phyllis Davenport.
This book is the gateway to grammar - and Phyllis is phenomenal.
Explanation:
A ____ is marked by two sets of double yellow lines, with each set having a broken line on the inside, and a solid line on the outside. white arrows appear in this lane as well.
Answer:
center left-turn lane
Explanation:
A center left turn lane will be marked as described. The arrows, if present, generally indicate that left turns are permitted from the lane with these markings.
__
If the double yellow lines are solid, they are considered to be a "barrier" and are not to be crossed.
Answer:
center left-turn lane
Explanation:
Tech A says never disconnect sensors before conducting resistance checks. Tech B says automotive test lamps should not be used on digital circuits because they draw too much current and can overload the circuit. Who is correct?
Answer:
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Question 6: Which of the following is NOT true if you are changing into a
turning lane?
You should activate your signals 100 feet beforehand
You should activate your signals when you get into the turn lane
You should activate your signals before you get into the turn lane
You should use your hands to signal if your lights do not work
Answer:
You should activate your signals 100 feet before you turn, becuase of that you should not wait until you are turning to turn on your signals. If you do not have working lights use your hands. So the answer that is inccorect is B.
You should activate your signals when you get into the turn lane is NOT true
Because you are supposed to single beforhand not while you're in the lane.
Im taking my drivers ed too. :)
if you experience brake failure...
Answer:
If your brakes go out, you want to do three things.
Explanation:
First, downshift to a lower gear. Second, if you have regular brakes pump the brake pedal fast and hard to build up brake fluid pressure. Gradually apply the parking brake and be prepared for the car to skid. hope this helps you :)
what is your favorite generation of the mustang?
Answer:
6TH AKA THE 2015-PRESENT
Explanation:
Answer:
I like them all except '74ish all the way up to '93.
What is kinetic energy?
Answer:
kinetic energy means energy which a body possesses by virtue of being in motion
Answer:
Kinetic Energy is a type of energy which a body possesses by virtue of being in motion.
OR
It's the energy of mass in motion.
Hope it helps!!Please mark me as the brainliest!!!Thanks!!!!
Which type of engineering design uses an already existing design?
A. top-down design
B. spiral design
C. bottom-up design
D.
incremental design
Answer:
The correct option is;
C. Bottom-up design
Explanation:
The bottom-up design is meant for system redesign or re-engineering of an existing design involving component upgrading or legacy systems replacement
The bottom-up design approach is also meant for applications where there is a new interface requirement for the original system in order to determine the functionality of the newly combined systems and also where a novel component is incorporated into the existing design.
The bottom-up approach starts with the analysis of the interoperability of the components to the modules and eventually the analysis of the system requirements.
Which of the following is the last step in creating a budget?
A. Identify income
B. Identify variable expenses
C. Identify fixed expenses
D. Determine savings or debt
Answer:
D. Determine saving or debt
Explanation:
When you arrive at an intersection with a stop sign in your direction, if there is no marked stop
line, you must
A: Stop within 10 feet of the intersecting roadway, on top of the pedestrian crosswalk if there is one.
B: Wait for pedestrians in the crosswalk to cross, then stop on the pedestrian crosswalk.
C: Stop before entering the pedestrian crosswalk.
Answer:
The answer is B. Wait for the pedestrians in the crosswalk to cross, then stop on the pedestrian crosswalk.
Based on the concept of road usage, and the available options, when you arrive at an intersection with a stop sign in your direction, if there is no marked stop line, you must Stop before entering the pedestrian crosswalk.
What is Pedestrian Crosswalk?Pedestrian Crosswalk is a term that is used to describe a place designated for pedestrians to cross a road, street, or avenue.
Generally, the term "pedestrian crosswalk" is also used in the Vienna and Geneva Conventions, both of which pertain to road signs and road traffic.
In this case, it is expected that when you arrive at an intersection with a stop sign in your direction, if there is no marked stop line, you must stop at the edge of the intersection just before entering the crosswalk or intersection.
It's important to come to a complete stop to ensure that it is safe to proceed before proceeding through the intersection. Be careful and aware of your surroundings to ensure a safe and steady flow of traffic.
Hence, in this case, it is concluded that the correct answer is option C. Stop before entering the pedestrian crosswalk.
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__is a mechanical force generated by a solid object moving through a fluid.
Answer:
Drag
Explanation:
What is version control?
Answer:
version control are a category of software tool that help a software team manage changes to source code over time.
If sail boats A and B are approaching each other with the wind on different sides, why is vessel A considered the give-way vessel (vessel that must take early and substantial action to avoid a collision)?
Answer:
The reason is because when the wind approaches each sailboat from a different side, the sailboat that the wind approaches from the port side, which is the left side is the give-way vessel.
Whereby the wind approaches the vessel A from the port (left) side then vessel A is considered the give-way vessel
The give-way vessel is the vessel that will have to take expeditious steps to create access for the other vessels by either changing course, stopping, or moving with reduced speed
Explanation:
The ramp in the railway station has rough surface .why?
Answer:
To increase the friction so we do not slip while walking.
Explanation:
If the surface is smooth then the frictional force between the ramp and the feet becomes less and the chances of slipping are greater.
what kind of line is used to indicate the supporting beam
Answer:horizontal
Explanation: because it is supporting it
Explain orthographic
and multi-view
projection
Answer:
Orthographic projection is a projection method to present three-dimensional shapes in two-dimensional format in which the projection lines are drawn to be orthogonal to the plane of projection, such that each view of the three-dimensional object is translated to a view of the orthographic projection and orthogonal to the view
A multiview projection is the representation of a three-dimensional projection by two or more two-dimensional views
Explanation:
If you think a hazard is serious, what is the best way to ensure that OSHA will
conduct a site inspection?
Help
Answer:
The best way to ensure that OSHA will conduct a site inspection is by the submission a signed (by a current employee or employee representative) Formal Written complaints following OSHA guidelines (which can be found in the Council of Safety and Health (COSH) website) which will enable the commencement of process for an on site inspection
As such it is advisable to go through the following procedure before, filing a complaint
1) Talk to your workers union about the hazard
2) If you do not belong to a union, talk to your co-workers
3) Inform your employer who has responsibility for on the job safety
4) Speak or have a meeting with OSHA so as to receive guidance before filing a complaint
Explanation:
If you think a hazard is serious, the best way to ensure that OSHA will conduct a site inspection is to file a complaint.
Hazard simply means a potential source of harm. It should be noted that hazards can have detrimental effect on the health of an individual.
If you think a hazard is serious, the best way to ensure that OSHA will conduct a site inspection is to file a complaint asking OSHA to inspect the workplace. In a situation whereby OSHA finds a serious hazard, it'll be kept confidential.
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