If a motor or transformer has a low-frequency hum, what can be done to reduce/ eliminate the noise?

Answers

Answer 1
no because has a power and it still with noise

Related Questions

To properly dispose of oily rags they must be

Answers

Answer:

tp put them in a oil safe container. or throw away

Answer:

oil can't be dispose

Explanation:

please mark brainleast

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?

Answers

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

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

Answers

Width * Length * Thickness * Density = Weight.
48″ * 96″ * . 1875″ * 0.284 lb/in3 = 245 lb.

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​

Answers

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:

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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,

Answers

Answer:

b because if u got the sewer and septic system

Describe each occupation

Carpenter, Logging, Shipwrights, Wood Machinist, Furniture finishers

Answers

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.

least count of scale used in class room is?​

Answers

Answer:

[tex] {10}^{ - 3} \\ because \: the \: small \: measurement \\ \: by \: using \: scale \: is \: milli \: metere \\ \: it \:i s \: {10}^{ - 3 } \\ thank \: you[/tex]

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

Answers

B……………………………………………..

(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 circuit

The 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 circuit

The 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 angle

The 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 circuit

The 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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5. In an automotive shop, asbestos is found in
A) O Oil
B) O Tires
CO Wiper fluid
Do Brake linings

Answers

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

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​

Answers

Answer:

I think it's A

Hope that helped you


3. Aqueous cleaners are
parts cleaning agents.
A) O Air-based
B) O Oil-based
C) O Plant-based
D) O Water-based

Answers

D) O Water - Based Is the 1000000000000000000% correct answer

Answer:

D

Explanation:

Aqueous basically means water.

LIST the differences between softwood and hardwood

Answers

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

Evaluate this design by describing the criteria it does or
does not meet

Answers

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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How do you make all of the dilldings

Answers

Answer:

I guess you are asking how do you make all the buildings.

Explanation:

we make it by using cement, brick and others.

What is equation for surface area?

Answers

Answer:

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. pls mark me branilest

How many uses are the for a paperclip?

Answers

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

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

Answers

Answer:tech A

Explanation:

Apollo 13 Describe how the flight controllers developed and used models. What kind of drawings might they have used to solve the problem

Answers

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

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.

Answers

Answer:

He/She can use gears or an animal

Explanation:

He/She can use gears or an animal like a donkey

What efc number will enable a student to receive the full amount of a pall grant

Answers

[tex]\tt \ huge \orange{ oh }[/tex]

guyss I seriously and urgently need help what are the steps to build a headgear ??​

Answers

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

This is all I could find online hope this helps

The first vertical shafts had a rectangular cross section and were lined with wood. The first Headgears were also made of wood, but as shaft depths and skip payloads increased, steel became the material of choice for building a Headgear.

True or false?

Shops can mix refrigerants

Answers

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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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

Answers

37 students in the class
18 Girls and 19 Boys

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

Answers

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."

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

Answers

Answer:

Im pretty sure its True.

Which of these does OSHA require employers to construct and install to minimize electrocution hazards?

Answers

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.

2. An AC current of

is large enough to cause muscle contractions.

a.12 mA

b.35 mA

с.5 mA

d.100 mA

Answers

Answer:

100 mA (1 A) because a current between 1 A - 4.3 A causes muscle contractions


batteries are used to power radios, watches, and cell phones,
A) Dry-cell
B) 9-volt
CO Duracell
D) Button

Answers

Answer:

dry cell.......,..

...

A…………………………………………..

3. Which of these tools is typically not used by Automotive Technicians?
A. Oxyfuel Cutting Equipment
B. Diagnostic Computers
C. Defibrillator
D. Test Instruments

Answers

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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e) What are the major jobs of a nurse?

Answers

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

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Identify the number as rational or irrational. Why are beakers and flasks not used to measure liquids Using the Principle of Mathematical Induction, prove that . n ^2 n is even for n 1 how many moles are there in 18 grams of water To demonstrate the action of salivary amylase on starch Take 1 mL starch solution (1%) in two test tubes (A and B). Add 1 mL saliva to test tube A and leave both test tubes undisturbed for 20-30 minutes. Now add a few drops of dilute iodine solution to the test tubes. *THE QUESTION*Akhil boiled the contents in the test tube A for half an hour before testing it with iodine. Will he get the result? Why? A complete reaction indicated by the chemical equation below produces 79.0 g of sulfur. Estimate the number of hydrogen atoms found in the amount of water that forms as a second product in this reaction.2 H2S(g) + SO2(g) 3 S(s) + 2 H2O(l)a. 1.98 10^24 atomsb. 4.80 10^23 atomsc. 6.40 10^25 atomsd. 1.02 10^26 atomse. 3.00 10^24 atoms why do we need a constituent assembly elected by people? in points I WILL MARK AS BRAINLIEST! Simplify Which mixture is heterogeneous?A. coffee with milkB. lemonade with iceC. paintD. liquid detergent help pleaseuse a, b, c, or d, also it's a multiple choice question How many grams are in 2 pounds? 1 pound = 0.45kg WORD FORMATION:I don't doubt the (effect) of this new gadget,but we simply don't have the money to buy it. Consider the equation 8x5y=10 A line parallel to the above line would have a slope ofA line perpendicular to the above line would have a slope ofPlease Help!! AWARDING BRAINLIEST NOW!!! What does it mean when someone says my friends are literally just filler I have one friend.??? Find three consecutive even numberssuch that the sum of three times thesmaller number and five times the largernumber is 40 more than twice the mediannumber. Can someone pls help me with this it's due today and I need to get my grades uppppp plsss I will give out brainiest promise worth 30 points 447,077 is ____________________then 347,077. Fill in the blank. Help!!! can someone help me solve this page im getting really confused I will mark you brainliest if you help me solve this :) No links please, links never work, this is science not physics Which two claims about cats are most likely to be based on science?A. Cats are the best animals to keep as pets.B Whiskers help cats sense distances when hunting prey.C. Cats spend more time sleeping than most other predators.D. Seeing a black cat is likely to bring you bad luck. Natasha found one of her grandmothers old recipes in her kitchen. She wants to double the recipe but needs to measure the milk in fluid ounces instead of cups. How many ounces of milk should she use if the recipe calls for a half of cup of milk?