A series RLC circuit consists of a 100 W resistor, a 0.15 H inductor, and a 30 µF capacitor. It is attached to a 120 V/60 Hz power line (the voltage 120V is the root mean square value). What are
a. The emf εrms
b. The phase angle ϕ
c. The average power loss
(a) The root mean square value of current in the circuit is 1.14 A.
(b) The phase angle ϕ of the circuit is 17.7⁰.
(c) The average power loss in the circuit is 136.4 W.
Capacitive and inductive reactance of the RLC circuitThe capacitive and inductive reactance of the series RLC circuit is calculated as follows;
Xc = 1/ωC
[tex]X_c = \frac{1}{2\pi f C} = \frac{1}{2\pi (60)(30 \times 10^{-6})} = 88.42 \ ohms[/tex]
Xl = ωL
Xl = 2πfL
Xl = 2π(60)(0.15)
Xl = 56.55 ohms
Impedance of the circuitThe impedance of the circuit is calculated as follows;
[tex]Z = \sqrt{R^2 + (X_c - X_l)^2} \\\\Z = \sqrt{100^2 + (88.42 -56.55)^2} \\\\Z = 104.96 \ ohms[/tex]
Rms current of the circuit[tex]I_{rms} Z = V_{rms}\\\\I_{rms} = \frac{V_{rms}}{Z} \\\\I_{rms}= \frac{120}{104.96} \\\\I_{rms}= 1.14 \ A[/tex]
Phase angleThe phase angle of the circuit is calcuated as follows;
[tex]tan \phi = \frac{X_c - X_l}{R} \\\\tan\phi = \frac{88.42 - 56.55}{100} \\\\tan\phi = 0.3187\\\\\phi = tan^{-1}(0.3187) \\\\\phi = 17.7 \ ^0[/tex]
Average power loss in the circuitThe average power loss in the circuit is calculated as follows;
[tex]P = I_{rms}^2 Z\\\\P = (1.14)^2 (104.96)\\\\P = 136.4 \ W[/tex]
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what is the optimal temperature for recharging a battery?
A. 50°F to 60°F
B. 60°F to 70°F
C. 70°F to 80°F
D 80°F to 90°F
Answer:
I think it's A
Hope that helped you
least count of scale used in class room is?
Answer:
[tex] {10}^{ - 3} \\ because \: the \: small \: measurement \\ \: by \: using \: scale \: is \: milli \: metere \\ \: it \:i s \: {10}^{ - 3 } \\ thank \: you[/tex]
3. Aqueous cleaners are
parts cleaning agents.
A) O Air-based
B) O Oil-based
C) O Plant-based
D) O Water-based
Answer:
D
Explanation:
Aqueous basically means water.
t/f
in shielded metal arc welding, the arc is shielded from the atmosphere by a gas that is created as a cover electrode melts
Answer:
Im pretty sure its True.
True or false?
Shops can mix refrigerants
Answer:
False
Explanation:
The statement "Shops can mix refrigerants" is false.
What are refrigerants?Refrigerants are the chemicals that are used in the refrigerator's cycle of the air conditioner. They are fluid. Examples of refrigerants are CFC, HCFC, FC, ammonia, etc.
They are changed to form a phase of liquid to gas and gas to liquid. They are their transition stages. There are four types of refrigerants. They are Evaporative Cooling, Mechanical-Compression Refrigeration Systems, absorption, and thermoelectric.
Inadequate system pressures and temperatures can be brought on by mixed refrigerants. This may lead to inadequate cooling of the compressor, potential compressor damage, inadequate cooling, and metering device malfunction.
Thus, the statement is false regarding shops can mix refrigerants.
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What efc number will enable a student to receive the full amount of a pall grant
[tex]\tt \ huge \orange{ oh }[/tex]
Technician A says that a 3x5 card should be held against the oil fill opening if the positive crankcase ventilation system is working correctly. Technician B says that if a PCV valve rattles then it’s working properly. Who is correct?
Answer:
Both Tech A&B are correct
Explanation:
In the given case, one can conclude that the technicians, A is correct and B is incorrect. The correct option is A.
What is PCV valve?Positive crankcase ventilation is referred to as PCV. Your engine's crankcase, which is where your motor oil is stored, is found there. Waste gases are created when gasoline is burnt in your engine and are primarily released through your exhaust system.
A rough idle, sluggish acceleration, or increased oil consumption may occur if the valve doesn't open and close on schedule or if any component of the system becomes clogged.
Problems with the PCV valve are frequently misdiagnosed since faulty spark plugs are frequently the source of rough idling.
If a PCV valve rattles then it should definitely be replaced. This means only technician A is correct.
Thus, the correct option is A.
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a. Technician A only
b. Technician B only
c. Both technicians
d. Neither technician
How do you make all of the dilldings
Answer:
I guess you are asking how do you make all the buildings.
Explanation:
we make it by using cement, brick and others.
5. In an automotive shop, asbestos is found in
A) O Oil
B) O Tires
CO Wiper fluid
Do Brake linings
In an automotive shop, asbestos is found in Brake linings.
What is Asbestos? Asbestos is a fibrous silicate material which was occurring naturally. These minerals have been used in construction and manufacturing for many reasons.In an Automotive shop, asbestos are used in wide variety of auto parts, including brakes, clutches, liners, gaskets, heat shields , etc.,.Drum brakes and disc brakes are usually manufactured using 30% to 60% of asbestos.Decal stripes, spark plugs, undercoating, Sound proofing, Insulation, etc., are also made up of asbestos.Old cars will contain more asbestos parts than new cars. Both professional auto mechanics and car owners who repair themselves are at an increased risk of developing mesothelioma and other asbestos-related diseases.Hence Option D is the correct answer.
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Answer:
D
Explanation:
Brake linings
e) What are the major jobs of a nurse?
Answer:
the major jobs of a nurse are
1.to take care of patients
2.to give medicine to patients in time
3.to help doctors in operation time
To properly dispose of oily rags they must be
Answer:
tp put them in a oil safe container. or throw away
Answer:
oil can't be dispose
Explanation:
please mark brainleast
guyss I seriously and urgently need help what are the steps to build a headgear ??
Answer:
Design. Modern headframes are built out of steel, concrete or a combination of both. Timber headframes are no longer used in industrialized countries, but are still used in developing nations
What is the weight of a steel plate in the shape of a circle with a diameter of 10'? The steel weighs 14 Ib per Ft2
The ratio of boys to girls in the class was 2 to 3. If there were 18 girls in the class, how many students were in the class
Apollo 13 Describe how the flight controllers developed and used models. What kind of drawings might they have used to solve the problem
Answer:
In order to power the fuel cells that provided most of the electricity used during the flight, the Apollo spacecraft carried two tanks of liquid hydrogen and two tanks of liquid oxygen. ... The testing team decided to solve this problem by heating the tank overnight to force the liquid oxygen to burn off
LIST the differences between softwood and hardwood
Answer:
Hardwood is usually denser than softwood.
Softwood is cheaper than hardwood.
Hardwood has good fire resistance while softwood has poor fire resistance.
Softwood is lighter than hardwood.
TEST ANSWER
PLS IGNORE
Drag each label to the correct location.
Match each power generation system to whether or not its fuel is processed prior to combustion.
coal-fired power plant
gas turbine
biomass power plant
geothermal power plant
Answer:
coal = not processed
geothermal = processed
biomass = processed
gas turbined = not processed
Explanation:
"Pre-combustion capture refers to removing CO2 from fossil fuels before combustion is completed."
How many uses are the for a paperclip?
Answer:
alot of uses depends on what you wanna use them for
Explanation:
well ofc you can use it to sort paper and other files but some people bend them and use them for other purposes as picking the lock to a door. theres alot of uses overall for a paperclip
Write short notes on: (any four) a) Suspended ground floor b) Soil exploration c) Baulking of sand d) Bearing capacity of soil e) Pointing DI INC CON
Answer:
a) A suspended floor is a ground floor with a void underneath the structure. The floor can be formed in various ways, using timber joists, precast concrete panels, block and beam system or cast in-situ with reinforced concrete. However, the floor structure is supported by external and internal walls.
b) Soil exploration consists of determining the profile of the natural soil deposits at the site, taking the soil samples and determining the engineering properties of soils using laboratory tests as well as in-situ testing methods
c) Bulking in sand Occurs When dry sand interacts with the atmospheric moisture. Presence of moisture content forms a thin layer around sand particles. This layer generates the force which makes particles to move aside to each other. This results in the increase of the volume of sand.
d) In a nutshell, bearing capacity is the capacity of soil to support the loads that are applied to the ground above. It depends primarily on the type of soil, its shear strength and its density. It also depends on the depth of embedment of the load – the deeper it is founded, the greater the bearing capacity.
Explanation:
please follow me
batteries are used to power radios, watches, and cell phones,
A) Dry-cell
B) 9-volt
CO Duracell
D) Button
Answer:
dry cell.......,..
...
Describe each occupation
Carpenter, Logging, Shipwrights, Wood Machinist, Furniture finishers
Answer:
Carpenter — A carpenter is someone who works with wood. They build houses and make cabinets etc.
Logging — Loggers are people who cut trees. They use strong chain saws to cut trees.
Shipwrights — Shipwrights build, design, and repair all sizes of boats.
Wood Machinist — Wood Machinists repair and cut timber or any kind of wood for construction projects. They also operate woodworking machines, as their name suggest.
Furniture finishers — Furniture finishers shape, decorate, and restore damaged and worn out furniture.
Evaluate this design by describing the criteria it does or
does not meet
Answer:
Personal water filters solve the problem of having access to safe drinking water anywhere. They are available and affordable. The materials used to make them are durable. They protect, rather than harm, users. Overall, the benefits outweigh the risks.
Explanation:
i just know its right because its the sample response :D
The personal water filter meets the following requirements: It cleans tap water for domestic use, is reasonably priced, and is easy to transport.
What is water filter?A water filter reduces water contamination through the use of a thin physical barrier, a chemical reaction, or a biological reaction to remove contaminants.
Conditions were satisfied in the example scenario:
Functionality: The personal water filter is capable of effectively removing germs and other pollutants from water.The filter is portable and convenient to use while traveling or camping because it is small and light.Affordability: The filter is a reasonable solution for those on a tight budget, costing around $20 or so.Durability: The filter can resist the wear and tear of continuous use thanks to its durable plastic design.Unmet requirements:
Heavy Metal Removal: In locations where water sources are tainted with such substances, the filter's inability to remove heavy metals from water raises some questions.In locations where water supplies are contaminated with these bacteria, the filter's ineffectiveness at removing viruses may be a problem.In regions where only saltwater is accessible, the filter's inability to remove salt from the water could be a problem.Longevity: The filter is sturdy, however depending on usage, it might not last as long as other filtering systems and might need to be changed rather frequently.Thus, these are the criteria it does or does not meet.
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What is equation for surface area?
Answer:
Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. pls mark me branilest
5. If you use pipe in a footing drain, there should be surface clean-out(s) located
O A. right next to the house.
O B. every 50 ft.
O C. every 100 ft
O D. near the discharge point,
Answer:
b because if u got the sewer and septic system
2
Tech A says the Wengine consists of two VR cylinder banks in a
deeper V arrangement to each other. Tech B says rotary engines are
very powerful for their size, but they do not use conventional pistons
that slide back and forth inside a straight cylinder. Who is correct?
of
Answer:tech A
Explanation:
3. Which of these tools is typically not used by Automotive Technicians?
A. Oxyfuel Cutting Equipment
B. Diagnostic Computers
C. Defibrillator
D. Test Instruments
The answer is "Option c", and more explanation can be defined as follows:
Automotive and mechanical service technicians alter their vehicles using oil. Autonomous service technicians and mechanics often referred to as service technicians or services technology experts, inspection, repair, and maintenance of automobiles & commercial vehicles.It contains fundamental rectangles, wrenches, sockets, flips & pinions. Tool to measure torques: As a technician, you will always take things apart and reassemble them. These tools tighten the attachments so that pieces can be reassembled properly. It uses oxyfuel cutters, diagnostic computers, and test instruments.Therefore, "Option C" is correct.
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2. An AC current of
is large enough to cause muscle contractions.
a.12 mA
b.35 mA
с.5 mA
d.100 mA
Answer:
100 mA (1 A) because a current between 1 A - 4.3 A causes muscle contractions
A farmer is building a grain mill. The grain is poured inside the mill from the top, and the farmer rotates the handle to grind the grain that goes through the mill. In 1–2 sentences, explain how she can improve the design of the mill to require less force for grinding.
Answer:
He/She can use gears or an animal
Explanation:
He/She can use gears or an animal like a donkey
Which of these does OSHA require employers to construct and install to minimize electrocution hazards?
Answer:
OSHA requires that the exposed and operating elements of an electrical installation, lighting, equipment, motors, machines, appliances, switches, controls, and enclosures must be constructed and installed so as to minimize workplace electrocution hazards.