1. You are working as an EMC engineer in a company producing electrical and electronic devices and systems. Your primary function is to ensure that your company's products comply with the relevant EMC standards. a. What is the definition of electromagnetic compatibility (EMC) according to the IEC? (2 marks) b. Explain the important to achieve EMC compliance to your company? (4 marks) Discuss the FOUR (4) basic EMC subgroups? (4 marks)

Answer:

Resistance = 3 Ω

Explanation:

As we know that, By Ohm's Law

V = IR

where

V is the voltage in volt

I is the current in amps

R is the resistance in ohm

Now,

Given that,

V = 15 volts

I = 5 amps

So,

R = V/I

  = 15/5

 = 3 Ω

⇒R = 3 Ω

While the PM coordinator is surveying the machine, it is a good idea for him or her to **check for any visible signs of wear, damage, or abnormalities**.

This includes inspecting the machine's components, such as belts, hoses, wires, connectors, and structural parts, for any signs of deterioration or malfunction. The PM coordinator should also look for loose or missing fasteners, leaks, unusual noises, or any other indications that may require maintenance or repair. Conducting a thorough visual inspection during the survey helps identify potential issues early on, allowing for prompt maintenance and preventing more significant problems or breakdowns. It is an essential step in ensuring the machine's reliability, performance, and overall safety.

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Answer:

d

Explanation:

Answer: It is  a nominal rate per year

Answer:

steep grading

Explanation:

the farthest

Effective operation of roller chain and gear couplings requires proper alignment and lubrication.

Roller chain coupling are compact and flexible couplings. They are used for low to moderate speed/torque applications. For effective operation they need to be maintained by applying lubrication and aligning.

Gear couplings are used for high speed and torque applications. For effective performance they need to be lubricated frequently and proper alignment is needed.

Hence effective operation of roller chain and gear couplings  requires proper lubrication and alignment.

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Answer:

Uh- dude if you think I'm gonna download that, think twice...

Batter boards (or battre boards, Sometimes mispronounced as "battle boads") are temporary frames, set beyond the corners of a planned foundation at precise elevations. These batter boards are then used to hold layout lines (construction twine) to indicate the limits (edges and corners) of the foundation.

Answer:

10 flip -flops are required to build a binary counter circuit to count to from 0 to 1023 .

Explanation:

Modular switches offer two main advantages over fixed-configuration switches. Modular switches have two main advantages over fixed-configuration switches: flexibility and scalability

The modular design of these switches allows for greater flexibility in terms of the number and types of ports that can be added or removed, as well as the ability to customize the switch to meet specific network requirements. Additionally, modular switches offer greater scalability, allowing organizations to easily expand their network as their needs grow without having to replace the entire switch. This makes modular switches an ideal choice for larger organizations that require a more flexible and scalable network infrastructure.

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Answer:

yes i do.

Explanation:

it's pretty easy in my opinion but i dont know about you why do you ask?

True is the answer.....

It's likely that the system is experiencing over voltage if a power supply's output voltage significantly exceeds the expected value.

Between what you require and the power supply's maximum rating, we advise leaving at least 10% to 20% of headroom. The idea that a high wattage power supply will push too much power into your devices, leading to overheating and burnout, is unfounded.

The peak demand for electricity can be decreased by scheduling all of the electric baseboard space heaters in public spaces to shut off during projected peak hours.

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Answer:

Explanation:

Work, U, is equal to the force times the distance:

U = F · r

Force needed to lift the weight, is equal to the weight: F = W = m · g

so:

U = m · g · r

   = 20.4kg · 9.81 \(\frac{N}{kg}\) · 1.50m

   = 35.316 \(\frac{N}{m}\)

   = 35.316 W

Answer: 25 ft

Explanation:

For a triangle, the area is given by

A = (1/2)base*height

Rearranging,

base = 2A/height

Substituting the given values,

base = 2(350 ft^2)/(28 ft) = 25 ft

Answer: b) 3.47 nj

Explanation:

Given that;

length l = 5m

radius of inner conductor r = 10cm = 0.1m

radius of outer conductor D = 20cm = 0.2m

current I = 100A = 100×10⁻³ = 0.1

medium between conductor in air u₀ = 4π × 10⁻⁷

Energy in a coaxial cable transmission line is

w = u₀ /2π I² en(b/a)

we substitute

L = 4π × 10⁻⁷ /4π ×10⁻²× 5 en (20/10)

L =3.4657 × 10⁻⁹ J

L = 3.4657 nJ ≈ 3.47 nJ

Answer: Problem Statement

Explanation:

When going about designing a new product or an improvement to an existing product, it is important to state the problem in a clear and concise way so that the designers know precisely what they are working towards.

This is where a Problem statement comes in. It states the problem in a concise manner and juxtaposes the current shortcomings of the current system against what the system should ideally be in such a way that even though the solution is clear, it is not so precise that it makes the designers narrow-minded.

Answer:

Any measurement greater than 14.5 or less than 11.5 mm.

Explanation:

The specification indicates the nominal value and tolerance from nominal.  

13 + 1.5 = 14.5

13 - 1.5 = 11.5

Any measurement above 14.5 or below 11.5 mm would be considered 'out of spec', and therefore rejected.

The advantages of battery powered mobile x-ray units include their portability, flexibility, and convenience. Because they are not tethered to a power outlet, they can be used in a variety of locations, including emergency situations, field hospitals, and remote clinics.

This allows healthcare professionals to provide high-quality imaging services in a wide range of settings, improving patient care and outcomes.

Battery powered mobile x-ray units also offer energy efficiency and cost savings compared to traditional fixed x-ray systems. They use less power and require less maintenance, making them more environmentally friendly and cost-effective in the long term.

Additionally, these units can be operated by a single person, reducing the need for additional staff and improving workflow efficiency. They are also equipped with advanced imaging technologies that produce high-quality images with minimal radiation exposure, ensuring the safety of both patients and healthcare professionals.

Overall, the advantages of battery powered mobile x-ray units make them an essential tool for modern healthcare practices, providing high-quality imaging services in a variety of settings while improving patient outcomes and reducing costs.

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Ew Wakefield Hospital has only one portable X-ray machine. The emergency room staff claim to have the greatest need for the machine, but the surgeons in the operating room demand ready access to the machine. The conflict between these two groups is a result of scarcity.

Science and technology are the driving forces behind today's modern medicine, allowing us to identify and treat a range of medical problems. X-ray technology has had a significant impact on medicine, and it is commonly used to diagnose various diseases, making it an essential tool for hospitals.

Despite the advantages, the scarcity of portable X-ray machines creates difficulties for hospital employees, including a dispute between the emergency room and the operating room staff at Ew Wakefield Hospital. There is only one portable X-ray machine available at Ew Wakefield Hospital.

The conflict between the emergency room and the operating room staff is a result of scarcity. Both departments require ready access to the X-ray machine. Scarcity can generate rivalry, competition, and conflict when people and organizations compete for the same resource.

The staff's conflict is a direct result of the lack of accessibility to the X-ray machine. Thus, scarcity can be a significant factor contributing to interpersonal conflict.

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there is no smoke its a electric train

Draw isometric projection Spatial axes of the item are represented as similarly willing to the drawing floor and same distances alongside the axes are drawn the same.

Definition of isometric projection an axonometric projection wherein the 3 spatial axes of the item are represented as similarly willing to the drawing floor and same distances alongside the axes are drawn same.

An isometric view of an item may be received via way of means of selecting the viewing path such that the angles among the projections of the x, y, and z axes are all of the same, or 120°. For example, with a cube, that is achieved via way of means of first searching immediately toward one face.

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When welding a T-joint, the reason that the arc need to be directed more toward the bottom workpiece is so that a person can hinder or stop any form of undercutting of the given top piece.

The Positioned flat of the flat position weld, often known as a "downhand" position, is the simplest and frequently the first weld that new pupils learn.

The welder places the metals to be welded flat and moves the electric arc across them while it travels across the workpiece in a way that is said to be an  horizontal orientation.

Therefore, based on the above, When welding a T-joint, the reason that the arc need to be directed more toward the bottom workpiece is so that a person can hinder or stop any form of undercutting of the given top piece.

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The formula that gives the maximum total number of nodes in a binary tree that has n levels is c. 2n+1-1.

A binary tree is a tree data structure where each node has at most two children, which are known as the left child and the right child. In a binary tree with n levels, the maximum total number of nodes is given by the formula 2n+1-1.

The root node is at level 0, so a binary tree with only one node has zero levels, and the maximum total number of nodes is 20+1-1=1.

A binary tree with two nodes has one level, and the maximum total number of nodes is 21+1-1=3. A binary tree with three nodes has two levels, and the maximum total number of nodes is 22+1-1=7.

This pattern continues for larger binary trees, and the maximum total number of nodes can be calculated using the formula 2n+1-1.

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Answer:

True

Explanation:

Wastewater should never be discharged into storm sewers. Storm sewers are constructed to store rainwater.  

Rainwater passes through storm sewers to the nearest underground water resource if the wastewater discharge into storm sewers, then they will also pollute the ground water, so usually the dirty water is not put in the storm sewers.

Answer:

true

Explanation:

because wastewater does go direct

Explanation:

(1) 174 inch

(2)1 foot 3.6 inches

(3) 39.649 centimetre

(4)175 decimeter

(5)26.25 feet

For a dislocation density of 10^4 mm^-2, the chain would extend 1.24 miles. For a density of 10^10 mm^-2, the chain would extend 124,274 miles.

1. Calculate total dislocations: Dislocation density x Volume = 10^4 mm^-2 x 1000 mm^3 = 10^7 dislocations
2. Estimate the length of one dislocation: Consider 1 mm as an average dislocation length
3. Calculate total length of dislocations: 10^7 dislocations x 1 mm/dislocation = 10^7 mm
4. Convert length to miles: 10^7 mm x (1 m/1000 mm) x (1 km/1000 m) x (1 mile/1.609 km) ≈ 1.24 miles
5. Repeat steps 1-4 for a density of 10^10 mm^-2: 10^10 mm^-2 x 1000 mm^3 = 10^13 dislocations, total length ≈ 124,274 miles.

Therefore the chain would extend 1.24 miles.

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The correct option for the implication of low variety is B) Flexibility needed. Variety refers to the number of different products, services, or activities that an organization offers. High variety means that a company offers a wide variety of products or services, while low variety means that a company provides a limited range of products or services.

One of the implications of low variety is that customers have limited options. They are restricted to purchasing only those goods and services that the company offers, which may not match their requirements or preferences. This may lead to losing customers to rivals who offer a greater variety of goods and services.

In the case of low variety, it is critical to have the required flexibility. Customers may ask for certain specific goods or services that are not provided by the company. To meet customer requirements, the company should be adaptable and able to rapidly respond to customer requests by expanding its product line. As a result, low variety necessitates the need for flexibility.

The other given options are not valid. Low unit cost is not related to low variety. Unit cost may be affected by economies of scale and other factors, but it is not directly related to variety. High complexity is not related to low variety as well. As the range of goods and services offered by the company increases, the complexity of the company's operations and management also increases. Matching customers' specific needs is partially correct because the company cannot match customer specific needs in low variety. In low variety, the company has a limited range of goods and services, so it is not possible to fulfill all the customers’ specific needs.

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The designing of a hotel's HVAC (Heating, Ventilation, and Air Conditioning) system would be considered an engineering activity.

HVAC design involves determining the heating, cooling, and ventilation requirements of a building, and designing a system that can meet those requirements efficiently. This activity requires expertise in the principles of thermodynamics, fluid mechanics, and heat transfer. In the first paragraph, you can explain that HVAC design is an engineering activity and briefly mention the purpose and requirements of the system. In the second paragraph, you can touch upon the technical knowledge and skills required for HVAC design.

HVAC (Heating, Ventilation, and Air Conditioning) design for a hotel is indeed considered an engineering activity. The purpose of the HVAC system in a hotel is to create a comfortable and healthy indoor environment for guests and staff by controlling the temperature, humidity, and air quality within the building.

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