A three phase fully controlled rectifier is used to drive a separately excited D.C. motor, and the motor has an armature resistance of 0.2Ω. The motor draws the rated current of 30 A at 900rev/min. The converter is fed by 208 VAC line, and the firing angle of the converter is 60 ∘
at rated load. If the motor current is continuous and ripple free, evaluate i. the back emf of the motor at rated load; (3 marks) ii. the voltage constant in V/rpm; (2 marks) iii. the firing angle of the converter at 75% rated speed; and (4 marks) iv. the firing angle of the converter at regenerative braking at rated speed.

As an organization becomes more mechanistic, its communication flow becomes formal and follows a vertical hierarchy.

Mechanistic organizations are the ones that have a centralized authority, formalized structures, rules, and procedures. These organizations' communication flows are primarily vertical, which means that the orders and decisions move from the top of the hierarchy to the lower levels.

A mechanistic organization is one that is structured hierarchically, with clear lines of authority and well-defined roles and responsibilities. In this type of organization, decision-making is centralized, and the organization's rules and procedures are formalized and standardized.

As an organization becomes more mechanistic, its communication flow becomes more formal and follows a vertical hierarchy.

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Answer:

Workshop technology is the type of technology which deals with different processes by which component of a machine or equipment are made. Its purpose is that the module unit is designed to equip the trainee with knowledge, skills, and attitudes that enable to perform basic workshop tasks.

Usually, electric heaters are used. Compared to fossil fuel heating equipment, it is more affordable to buy but more expensive to run.

Any type of biologically derived hydrocarbon-containing fuel that is found in the Earth's crust and can be used as an energy source is referred to as a fossil fuel.

Oil shales, bitumen, tar sands, and heavy oils are examples of fossil fuels along with coal, petroleum, natural gas, and petroleum. All of them include carbon and were created by geologic processes acting on the remains of organic matter produced by photosynthesis, a process that started in the Archean Eon (4.0 billion to 2.5 billion years ago). Before the Devonian Period (419.2 to 358.9 million years ago), the majority of carbonaceous material came from bacteria and algae, but the majority of carbonaceous material that formed during and after that time came from plants.

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Answer:

1. 4/d and 1

2. Engineering tech with 3, Engineer with 1, and Scientist with 2

Explanation:

I'm pretty sure but tell me if im wrong

On the orifice with a 50 mm in diameter opening:

(a) The volume flow rate of water through the pipe is:

\(Q = A_v v\)

where A_v = area of the orifice and v = velocity of the flow.

The area of the orifice is:

\(A_v = \pi ( \frac{d}{2} )^2 = \pi (\frac{50}{2})^2 = 1962.5 mm^2\)

The velocity of the flow is:

\(v = \sqrt{2gH} = \sqrt{2(9.81)(0.15)} = 1.715 m/s\)

Therefore, the volume flow rate is:

Q = 1962.5 mm² × 1.715 m/s = 3.375 m³/s

(b) The average velocity of the flow is:

\(v_avg = Q/A_p = Q/(\pi (\frac{d}{2})^2) = 3.375 m^3/s / (\pi (\frac{100}{2})^2) = 1.082 m/s\)

(c) The head loss caused by the orifice meter is:

\(H_L = \frac{v^2}{2g} = \frac{(1.715)^2}{2(9.81)} = 0.15 m\)

(d) The height of water column required if replaced with water manometer is:

\(H_w = \frac{\rho_m}{\rho_w} H_m = \frac{13.6}{1} (0.15) = 2.04 m\)

Therefore, the answers to your questions are:

(a) The volume flow rate of water through the pipe is 3.375 m^3/s.

(b) The average velocity of the flow is 1.082 m/s.

(c) The head loss caused by the orifice meter is 0.15 m.

(d) The height of water column required if replaced with water manometer is 2.04 m.

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Explanation:

\( \frac{1}{8} + \frac{1}{2} \\ 1.6 + 1.4 = 3 \\ \frac{1}{3} + \frac{1}{9} \\ 2.25 + 2 = 4.25 \: ohm\)

R total = 4.25 ohm

I total = Vt/Rt

I total= 17/4.25= 4 A

Ix= 600 mA

\( \frac{9}{9 + 3} \times 4 = 3\\ \frac{2}{2 + 8} \times 3 = 0.6a \\ = 0.6 \: milli \: amper\)

Design is evaluated for fatigue strength or endurance strength using Goodman criteria. When compared to the general assumed endurance stress of steel, 0.5 ultimate strength, the design was found to be safe. The number of fatigue failure cycles was calculated using the Basquin's equation.

Stress is a force per unit area within materials that results from externally applied forces, uneven heating, or permanent deformation and allows for accurate description and prediction of elastic, plastic, and fluid behavior in physical sciences and engineering. A stress is defined as the product of a force divided by its area.

There are several types of stress. Normal stress is caused by forces perpendicular to a material's cross-sectional area, whereas shear stress is caused by forces parallel to and within the plane of the cross-sectional area.

Tensile stress refers to the normal stress caused by tension. When the two forces are reversed, the normal stress is known as compressive stress.

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Answer:

yes maybe

Explanation:

I have a project and everyone in the world will know about it.

Answer:

both

Explanation:

Answer:

Kirchhoff's current law (1st Law) states that the current flowing into a node (or a junction) must be equal to the current flowing out of it

Explanation:

A fabric-based domed structure can last for approximately 20 to 30 years with proper maintenance and care.

The lifespan of a fabric-based domed structure can vary depending on several factors. The quality of the fabric material, the structural design, environmental conditions, and maintenance practices all play a role in determining its longevity. High-quality fabrics made from durable materials, such as architectural-grade PVC or PTFE-coated fiberglass, tend to have a longer lifespan. Regular inspections, cleaning, and repairs are essential to ensure the integrity of the fabric and the structural components. Proper tensioning and periodic maintenance can help prevent issues such as sagging, tears, or UV degradation, which can affect the structure's lifespan.

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Answer:

What ! you are an Engineer and I am a High school why are You in my feed..!!

Answer:

. What's an object in your everyday life that has a lot of Kinetic Energy? How do you know it has a lot?

"Something that has a lot of Kinetic Energy is a plane and a baseball . I know this because the baseball gets energy to it when its thrown which is giving in kinetic energy".

2.What's an object in your everyday life that has a lot of Potential Energy? How do you know it has a lot? "an object that has a lot of potential energy is Water that is behind a dam. A car that is parked at the top of a hill. A yoyo before it is released. I know this because

the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors."

The principle of supply chain strategy is Segregate customers on the basis of service needs of different  groups and follow the supply chain to deliver   goods and services to the consumers profitably.

Supply chain is the group of activities performed by an organization to deliver goods and services to the consumer end.

Thus, one of the principle of supply chain strategy is separate the customers on the basis of service needs of different  groups and follow the supply chain to deliver goods and services to the consumers so that they earn profit.

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In AES, each round of encryption involves 4 layers except for the (a) first round.

The first round of AES encryption involves only the AddRoundKey step, while all subsequent rounds involve the four steps of SubBytes, ShiftRows, MixColumns, and AddRoundKey. This is because the first round is used to add the key to the plaintext, while the subsequent rounds are used to mix the data and make it more difficult to decrypt.

The AES encryption algorithm is a symmetric key algorithm, which means that the same key is used to encrypt and decrypt data. The algorithm uses a block cipher, which means that data is encrypted in blocks of 128 bits.

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Answer:Bio team

Explanation:

Answer: In a clean plastic or metal container with a tightly sealed lid

Answer:

Diameter of pipe is 0.535 ft

Explanation:

see attachment, its works out 1st half

Explanation:

rational

Step-by-step explanation:

The discriminant (d) of a quadratic equation ax^2 + bx + c = 0ax

2

+bx+c=0 is:

\boxed{\mathrm{d =} \ b^2 - 4ac}

d= b

2

−4ac

.

If:

• d > 0, then there are two real solutions

• d = 0, then there is a repeated real solution

• d < 0, then there is no real solution.

In this question, we are given the quadratic equation 3x^2 + 4x - 2 = 03x

2

+4x−2=0 . Therefore, the discriminant of the equation is:

b² - 4ac = (4)² - 4(3)(-2)

= 16 - (-24)rational

Step-by-step explanation:

The discriminant (d) of a quadratic equation ax^2 + bx + c = 0ax

2

+bx+c=0 is:

\boxed{\mathrm{d =} \ b^2 - 4ac}

d= b

2

−4ac

.

If:

• d > 0, then there are two real solutions

• d = 0, then there is a repeated real solution

• d < 0, then there is no real solution.

In this question, we are given the quadratic equation 3x^2 + 4x - 2 = 03x

2

+4x−2=0 . Therefore, the discriminant of the equation is:

b² - 4ac = (4)² - 4(3)(-2)

= 16 - (-24)

= 40

Since the discriminant, 40, is greater than zero, the quadratic equation has 2 rational solutions.

= 40

Since the discriminant, 40, is greater than zero, the quadratic equation has 2 rational solutions.

Texas's highway system is true in that it is extensive, well-maintained, and includes a combination of interstate highways, state highways, and toll roads, providing efficient transportation and connectivity throughout the state.

Texas's highway system is one of the largest and most extensive in the United States. The system includes over 80,000 miles of highways, roads, and freeways, with over 3,300 miles of interstate highways alone. The highway system in Texas is maintained and managed by the Texas Department of Transportation (TxDOT), which oversees the construction, maintenance, and operation of the state's roadways.

The Interstate Highway System is a crucial part of Texas's highway system, with 25 interstates running through the state, including I-10, I-20, I-35, and I-45. These highways connect Texas to major cities across the United States, including Los Angeles, New Orleans, and Chicago.

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Answer:

they occur at the same time

Explanation:

What this means is that if let's say on a particular cash record we have two transactions on the same date: For example,

Only the two transactions on the 11th are permissible to sum the dollar amounts without conversion.

A performance (HC) curve for a given centrifugal pump shows that option B. Flow rate decreases as the head required to overcome system resistance increases.

The Centrifugal pump curves are helpful because they display metrics for the performance of the pump based on the head (pressure) the pump produces and the water flow through the pump. Impeller diameter, head, as well as the pump speed all affect flow rates.

Note that an instrument that predicts a pump's head and flow performance is a centrifugal pump performance curve. Pumps provide low volume flow rates when pumping against high-pressure heads and high volume flow rates if they are said to be pumping against low-pressure heads.

Therefore, one can say that every centrifugal pump has a curve that it follows in order to function, and every curve has a start point (the shut-off or zero flow) and an end point (the end-of-curve or the maximum flow that can be achieved without overtaxing the motor).

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Answer:

Explanation:

In satellite communications, downlink is the establishment of a communications link from an orbiting satellite down to one or more ground stations on Earth. Contrast with uplink.

For a well with the diameter of 2 ft, the approximate head in the pumped well for steady-state condition and approximate drawdown is 61.5770 ft and 48.42 ft respectively. The computed value of transmissivity is 1516.8 ft²/day.

We have a well with 2 feet diameter penetrates vertically through a confined aquifer 50 ft thick. Well is pumped at 500 gpm. The drawdown in a well 50 ft away is 10 ft.

Hence, required value is 48.42 feet. For a well with diameter of 2 ft, the approximate head in the pumped well for steady-state condition and approximate drawdown is 61.5770 ft and 48.42 ft respectively. The computed value of transmissivity is 1516.8 ft²/day.

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A diagram showing a use case diagrams for these requirements is given in the image attached.

A use case diagram is known to be a kind of graphical illustration of a users in terms of their various possible association or interactions within any given system.

A use case diagram in banking can be used to prepare, depict and also to know all the functional requirements of the banking system.

Therefore, Give the use case specification for the banking system services and paying a bill online is given in the image attached.

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Answer: Photo lines

Explanation: made more sense

The values of h at the two internal boundaries are :

Given data :

Z₁ = Z₂ = Z₃ = 25 m

h top = 120 m

h bottom = 100 m

K₁ = 0.0001 m/s

K₂ = 0.0005 m/s

K₃ = 0.0010 m/s

we will apply the formula below since flow is perpendicular to the bedding plane

Keq = \(\frac{Z1 + Z2 + Z3 }{\frac{Z1}{K1}+\frac{Z2}{K2} + \frac{Z3}{K3} }\)  ----- ( 1 )

Insert values given above into equation 1

Therefore ; Keq = 2.307 * 10⁻⁴ m/s

Hydraulic gradient ( Ieq ) = head loss / length

                                          = ( 120 - 100 ) / 3 * 25

                                   Ieq  = 0.266

Given that the flow is perpendicular to bedding plane

q1 = q2 = q3

V₁ = V₂ = V₃ = V

K₁i₁ = K₂i₂ = K₃i₃ = Keq * ieq

Hence :

V = Keq* Ieq

   = 2.307 * 10⁻⁴ * 0.266

   = 6.15 * 10⁻⁵ m/s .

Also;

K₁i₁ =  Keq * ieq = K₂i₂ = K₃i₃

therefore :

  i₁ = 0.615

  i₂ =  0.123

  i₃ = 0.0615

Pressure at point 1 ( i.e. pressure between first two formations )

h₁ = h top - i₁L₁

   = 120 - 0.615 * 25

   = 104.625 m

Pressure at point 2 ( i.e. pressure between the 2nd and 3rd formation )

h₂ = h₁ - i₂L₂

    = 104.625 - 0.123 * 25

    = 101.55 m

Therefore we can conclude that The values of h at the two internal boundaries are :  h₁ = 104.625 m , h₂ = 101.55 m

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To determine the distance (d) required for the landing zone of a launched particle to have a width equal to the vertical opening height (b = 355 mm), as well as the range of the horizontal speed (u) that allows the particle to pass through the opening, we need to consider the projectile motion and the relationship between distance, time, and velocity.

The projectile launched from point A follows a parabolic trajectory. To pass through the vertical opening with a height of b, the projectile needs to reach a maximum height greater than or equal to b.

The time of flight of the projectile can be calculated using the equation t = 2usinθ/g, where θ is the launch angle and g is the acceleration due to gravity. The maximum height reached by the projectile can be determined using the equation h_max = (u^2sin^2θ)/(2g).

For the projectile to pass through the vertical opening with a height of b, the maximum height h_max should be greater than or equal to b. Once d is determined, the range of the horizontal speed (u) that allows the projectile to pass through the opening can be calculated using the equation d = ucosθt.

By combining the equations and solving for d and u, we can determine the required distance d for the landing zone and the range of the horizontal speed u that allows the projectile to pass through the vertical opening with a width equal to b.

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Answer:

a

Explanation:

digital identity is the answer

The core domain for Accenture’s multi-party System is that of a digital identity. Ths that option A is correct.

A multiparty system is a shared data infrastructure within the individual and the organizations that drive the efficiency nf new business and lead to the formation of the revenue models. They include the blockchain and distribution database and include a variety of technology and other capabilities.

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