A 500 kva load has a power factor of 90% lagging and is supplied by a 480 v source. Determine the three line currents

When making a conduit-to-box connection and a bonding wire will be installed, by using a. grounding locknut.

Metallic couplings  can be used for metallic conduit and they can be  secured  with set screws or via compression.

It should be noted that the threaded couplings screw onto couplings that have threaded ends will make it easier.

Nonmetallic couplings can be used for  nonmetallic conduit  which are usually attached with solvent cement, hence When making a conduit-to-box connection and a bonding wire will be installed, by using a. grounding locknut.

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It is false that a complicated emissions control system would be the only way to lower a rotary engines poor emissions.

Emission control system is developed to reduce emissions and discharge.

They are found in vehicles and other automobile to limit the discharge or release of gases thay are noxious which emit from combustion engine.

To control exhaust emissions, the air-injection system can be used and also, the exhaust gas recirculation (EGR) system can be used to reduce emissions. A high emissions requires high energy control system.

Therefore, It is false that a complicated emissions control system would be the only way to lower a rotary engines poor emissions

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When required to drill holes on a roof that has no power supply the best drill for the job would be a cordless drill.

It should be noted that a power supply is an electrical device which supplies electric power to an electrical load.

In this case, the main purpose of a power supply is simply to be able to convert electric current from the source to the correct current, and frequency.

In this case, the power supply unit converts the main AC to a low-voltage regulated DC power. Therefore, When required to drill holes on a roof that has no power supply the best drill for the job would be a cordless drill.

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In the case above,  It will take more time for a tooth of wheel B and C to make a full turn (slower) than it will for a tooth of wheel A.

A gear wheel is known to be a kind of a wheel that is known to be made up of a teeth and/or cogs that is known to function with those of other aspect of the wheel or part.

Note that in the above case, lets use a scenario that  Wheel P has 5 teeth. Wheel M has 3 teeth and wheel N has 1 teeth.  If wheel P makes a full turn, wheel M turn will be slower as  well as wheel N which will take more time.

Therefore, In the case above,  It will take more time for a tooth of wheel B and C to make a full turn than it will for a tooth of wheel A.

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Answer:

the answer to this is 6 times.

Answer: ………………..

Explanation:???????????????

Answer:open circuit

short circuit

voc

Explanation:

Answer:

These are the components telecommunication service providers use to run certain operations towards customers.

hope it helps. pls like and follow

Business support systems "provide job-related information support to users at all levels of a company". The correct option is 'a'.

Business support systems (BSS) encompass a combination of functionalities mentioned in the provided options. Let's discuss each option briefly:

a. Provide job-related information support to users at all levels of a company:

This statement aligns with the concept of Decision Support Systems (DSS), which are a type of BSS that aid users in making informed decisions by providing relevant information and analysis. DSS supports various levels of management by assisting them in evaluating alternatives, analyzing data, and generating reports to support decision-making processes.

b. Simulate human reasoning by combining a knowledge base and inference rules that determine how the knowledge is applied:

This description pertains to Expert Systems, which are an advanced form of BSS. Expert Systems utilize a knowledge base and inference rules to imitate human expertise and provide intelligent solutions to complex problems. They are particularly useful in domains where specialized knowledge is required.

c. Process data generated by day-to-day business operations:

This statement refers to Transaction Processing Systems (TPS), which are an essential component of BSS. TPS handles routine, day-to-day transactions and processes data generated during regular business operations, such as sales, inventory, and payroll.

d. Include e-mail, voice mail, fax, video conferencing, word processing, automated calendars, database management, spreadsheets, and integrated mobile computing systems:

These technologies are examples of Office Automation Systems (OAS), another category of BSS. OAS streamline office tasks and improve communication and collaboration among employees through various software tools and applications.

Therefore, business support systems encompass a range of applications and technologies that provide job-related information support.

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The complete question:

Business support systems ____.

a. provide job-related information support to users at all levels of a company

b. simulate human reasoning by combining a knowledge base and inference rules that determine how the knowledge is applied

c. process data generated by day-to-day business operations

d. include e-mail, voice mail, fax, video conferencing, word processing, automated calendars, database management, spreadsheets, and integrated mobile computing systems

Answer:

A. True

Explanation:

The statement is true

a. The maximum thickness of the copper nozzle is 3.3 mm

b. The maximum thickness of the steel nozzle is 0.054 mm

The question has to do with heat transfer

Heat transfer is the movement of heat energy from one body to anotrher.

Since the rate of heat loss by the gas equal rate of heat gain by the metal.

The rate of heat loss by gas is P = -hA(T - T') where

The rate of heat gain by metal is given by P' = kA(T - T")/t where

Since P = P', we have that

-hA(T - T') =  kA(T - T")/t

Making t subject of the formula, we have

t = -k(T - T")/h(T - T')

Given that for copper

Substituting the values of the variables into t, we have

t = -k(T - T")/h(T - T')

t = -378 W/m-K(540°C - 150°C)/[2 × 10⁴ W/m²-K(540°C - 2750°C)]

t = -378 W/m-K(390°C)/[2 × 10⁴ W/m²-K(-2210°C)]

t = 147420 W/m/4420 × 10⁴ W/m²

t = 147420 W/m/44200000 W/m²

t = 0.0033 m

t = 3.3 mm

So, the maximum thickness of the copper nozzle is 10.71 cm

Given that for steel

Substituting the values of the variables into t, we have

t = -k(T - T")/h(T - T')

t = -23.2 W/m-K(980°C - 150°C)/[2 × 10⁴ W/m²-K(980°C - 2750°C)]

t = -23.2 W/m-K(830°C)/[2 × 10⁴ W/m²-K(-1770°C)]

t = 19256 W/m/3540 × 10⁴ W/m²

t = 19256 W/m/35400000 W/m²

t = 0.0000544 m

t = 0.0544 mm

t ≅ 0.054 mm

So, the maximum thickness of the steel nozzle is 0.054 mm

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Answer:

Electrode Holder

Explanation:

Shielded metal arc welding (SMAW), also known as manual metal arc welding, is a manual arc welding process that uses a consumable and protected electrode. As the electrode melts, a cover that protects the electrode melts and protects the weld area from oxygen and other atmospheric gases

Answer:

Between 35°– 45°

Explanation:

In the vertical position, Point the flame in the direction of travel. Keep the flame tip at the correct height above the base metal. An angle of 35°–45° should be maintained between the torch tip and the base metal. This angle may be varied up or down to heat or cool the weld pool if it is too narrow or too wide

The cubic inch space that is required inside a box for 4 #6 XHHN current carrying conductors will be D. 8 cubic inches.

It should be noted that a conductor simply means a substance or material that simply allows electricity to pass through it.

From the information given, the cubic inch space that is required inside a box for 4 #6 XHHN current carrying conductors is yo be computed.

This will be:

= (4 × 6)/3

= 24/3

= 8

In conclusion, the cubic inch space that is required inside a box for 4 #6 XHHN current carrying conductors will be 8 cubic inches.

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pf=cos(thira)

pf=kw/kvar

The power factor of the motor and the amount of capacitance is 195 μF. The amount of capacitance required to correct the power factor to 95%. Thus, option B is correct.

A capacitor has been defined as a device that stores the electric strength in an electric powered discipline by using the virtue of accumulating the electric costs on near surfaces insulated from each other. It's miles a passive digital thing with terminals.

The effect of the capacitor is referred to as capacitance. The capacitor is a part that has the capacity or “ability” to save strength inside the form of an electrical price producing a potential difference (Static Voltage) across its plates, similar to a small rechargeable battery.

Calculation:-

P = 18700

Q₂ = 29049.34

S = 29680

Q₂ = v²ωc

29049.34  = (560)² × ( 2π × 60 )

C = 1.95 × 10⁻⁴

C  = 195 μF

Therefore, The power factor of the motor and the amount of capacitance is 195 μF. The amount of capacitance required to correct the power factor to 95%. Thus, option B is correct.

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Answer:

maximum torque of metal

Explanation:

One of the solutions that can help to reduce fraudulent conduct by those in power is to hold them accountable.

This refers to the process through which an area or region experiences growth and improvement in terms of infrastructure and general well-being.

Hence, we can see that some of the effects of dishonest or fraudulent conduct by those in power are:

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Answer:al part of question

Explanation:voltage

Answer:

By using a forward-inclined half-moon torch position, stopping momentarily at each end of the weld pool

Explanation:

By using a forward-inclined half-moon torch position, stopping momentarily at each end of the weld pool

Adjusting welding parameters, using appropriate electrode size, and maintaining proper torch angle can prevent undercutting in horizontal

welding of an inside corner.

We have,

When an inside corner is being welded in the horizontal position, undercutting can be decreased or prevented by adjusting the welding parameters, such as:

- Controlling Welding Parameters:

Adjusting the welding parameters is crucial in preventing undercutting.

It involves regulating the welding current, voltage, and travel speed.

- Selecting Appropriate Electrode Size:

Choosing the right electrode size is essential to control the heat generated during the welding process.

Smaller electrode diameters generally provide lower heat input, which can help prevent undercutting.

- Maintaining Proper Torch Angle and Manipulation Techniques:

Keeping the correct torch angle during welding is crucial to control the weld pool and metal deposition.

- reducing the welding current and travel speed

- using the appropriate electrode size

- maintaining proper torch angle and manipulation techniques.

Thus,

Adjusting welding parameters, using appropriate electrode size, and maintaining proper torch angle can prevent undercutting in horizontal welding of an inside corner.

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A pilot reports that when the hydraulic pump is running, the pressure is normal. However, when the pump is stopped, no hydraulic pressure is available. This is an indication of a leaking accumulator air valve

This is further explained below.

Generally, An accumulator of the bladder type is a metal tank that houses a rubber bladder that is filled with compressed gas. This form of the accumulator is also sometimes referred to as a hydro-pneumatic accumulator. In addition, the discharge port has a poppet valve, and the gas valve that is used to precharge the bladder has its own separate valve.

In conclusion, When the hydraulic pump is operating normally, according to the report of a pilot, the pressure is normal. On the other hand, there is no hydraulic pressure available when the pump is turned off. The presence of this symptom is evidence of a leaky accumulator air valve.

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Answer: Dampness or moisture introduces hydrogen into the weld, which causes cracking when some metals are welded.

Explanation:

This moisture (hydrogen) is a major cause of weld cracking and porosity.

Answer:

Put on your right turn signal

The two techniques that allow the io to play a useful advisory role even without direct experience in human subject protection areas are periodically reviewing institutional policy and reviewing federal regulatory agency determination letters.

It should be noted that the role of an advisory board is to provide current knowledge, critical thinking as well as to increase the confidence of the decision-makers that represent the company.

Also, human subjects protections implies the collective term for the federal, state, and university ethical considerations which protect the rights and welfare of human beings.

Therefore, the two techniques that allow the io to play a useful advisory role even without direct experience in human subject protection areas are periodically reviewing institutional policy and reviewing federal regulatory agency determination letters.

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Explanation:

HP to torque (Nm) Calculation:

Torque T(Nm) in Newton meter (Nm) is equal to the 746 times of power P(HP) in horsepower divided by the 0.105 times of the motor speed N(rpm) in RPM. In another short word, 7127 times of horsepower divided by the motor speed is equal to motor torque.

Disability is extremely diverse. While some health conditions associated with disability result in poor health and extensive health care needs, others do not. However, all people with disability have the same general health care needs as everyone else, and therefore need access to mainstream health care services.

Engineering ethics is not without abstraction, but in contrast with computing, it is animated by a robust and active movement concerned with the seamless identification of ethics with practice.

This is a branch of science and technology concerned with the design, building, and use of engines, machines, and structures that uses scientific principles.

Comparing ethics in engineering and ethics in computing:

Some practical examples in the computing field:

Some practical examples in the engineering field:

Hence, Engineering ethics is the field of system of moral principles that apply to the practice of engineering and following them is important to the profession.

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The critical buckling load of an ideal column of circular cross section can be reduced by increasing the diameter of the column.

The critical load is known to be that factor that is labeled the greatest load that is one which is unable to cause lateral deflection (buckling).

Note that For loads greater than the critical load, the column will tend to decrease laterally. The critical load is known to be one that puts the column in what we call the state of an unstable form of equilibrium.

The critical buckling load is based  on the shape and dimensions of beam section that is said to have constant cross sectional area.

Hence, The critical buckling load of an ideal column of circular cross section can be reduced by increasing the diameter of the column.

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Answer:

Explanation:

It is the voltage a voltmeter would read when connected across something that has resistance.

___________0_________O______O_______

|                                                                               |

|                                              |                                |

|_____________________|  |_____________ |

                                              |

The diagram above is supposed to represent 3 lightbulbs connected in series. The vertical lines in the middle are supposed to be a battery which powers the three light bulbs. If you put a voltmeter across one of the lightbulbs, it will read a voltage that is 1/3 of the voltage of the battery.

Answer

That reading you get across the one light bulb is The Voltage Drop.

The phase of the engineering design process which should be completed next is to test their work and is denoted as option C.

These are the series of steps and techniques which are done by individuals in the making of functional product and services.This employs the use of scientific methods and also ensures an easier living for different individuals.

The first stage involves identifying the problem and then building a prototype through the use of different materials. This is then tested before the final finishing work is done to ensure the parts are properly placed before they are moved for evaluation by other people.

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Answer: block o’ metal

Explanation: