All categories

4 years ago

What is the function of a fixed resistor?

Engineering

1 answer:

agasfer [191]4 years ago

8 0

Answer:

add resistance to a circuit

Explanation:

It depends on the design in which it is incorporated. A fixed resistor has many uses, including, but not limited to ...

dropping voltage
limiting current
contributing to a time delay
adjusting frequency response
eliminating (or creating) signal reflections
acting as a fuse
calibrating or trimming a response
providing protection against electrical shock or ESD
acting as a reference when measuring variable resistors

You might be interested in

Which phase of DevSecOps emphasizes reliability, performance, and scaling

rosijanka [135]

Answer:

"Test Phase " is the correct choice.

Explanation:

DevSecOps seems to be a community as well as experience of corporate data science which encompasses software design, regulation, including operational activities. This same main feature of DevSecOps has always been to strengthen customer achievement as well as expedition importance by computerizing, supervising as well as implementing data protection at all stages of the development including its development tools.
The testing method throughout the test phase would then help make sure that the controller is designed mostly under the responsibilities forecasted. The test focuses on either the reaction times, dependability, use of resources but instead interoperability of applications.

4 0

4 years ago

A horizontal opaque flat plate is well insulated on the edges and the lower surface. The top surface has an area of 8 m2 and it

Oliga [24]

Answer:

a = 0.8333

p = 0.1667

ε = 0.6243

Explanation:

Given:

- Solar Irradiation G = 6000 W

- Irradiation absorbed G_abs = 5000 W

- Heat Loss by convection Q_convec = 750 W

- The temperature of surface remains constant @ 350 K

Find:

Determine the absorptivity, reflectivity, and emissivity of the plate

Solution:

- Absorptivity is the ratio of energy absorbed to the incident energy given as:

a = G_abs / G

- Plug in values: a = 5000 / 6000

a = 0.8333

- Reflectivity is the ratio of energy not absorbed to the incident energy given as:

p = (1 - G_abs) / G

- Plug in values: p = 1000 / 6000

p = 0.1667

- Emissivity is the of ratio amount energy that is radiated from the body to the black body:

- We will use energy balance on the plate surface:

E_in - E_out = -k*A*dT / L

- We know that the plate temperature remains constant, dT = 0:

E_in = E_out

Q_abs = Q_convec + Q_rad

Q_rad = Q_abs - Q_convec

- Plug in values: Q_rad = 5000 - 750 = 4250 W

- The expression for surface radiation is given by:

Q_rad = ε*A*б*T_b^4

- Re-arrange: ε = Q_rad / A*б*T_b^4

- Plug values in: ε = 4250 / 8*(5.67*10^-8)*(350)^4

ε = 0.6243

4 0

3 years ago

Which kind of fracture (ductile or brittle) is associated with each of the two crack propagation mechanisms?

Nina [5.8K]

dutile is the correct answer

6 0

3 years ago

The drag coefficient of a car at the design conditions of 1 atm, 25°C, and 90 km/h is to be determined experimentally in a large

SIZIF [17.4K]

Answer: 0.288

Explanation:

Given

Pressure of the car, P = 1 atm

Temperature of the car, T = 25° C

Speed of the car, v = 90 km/h = 90*1000/3600 = 25 m/s

Height of the car, h = 1.25 m

Width of the car, b = 1.65 m

Force acting on the far, F = 220 N

Drag coefficient, C(d) = ?

Using our table A-9, we can trace that the density of air ρ, at the given temperature and pressure of 25 °C and 1 atm, is 1.184 kg/m³

Area = h *b

Area = 1.25 * 1.65

Area = 2.0625 m²

Now we solve for the drag coefficient using the formula

C(d) = F / (1/2 * ρ * A * v²)

C(d) = 220 / (0.5 * 1.184 * 2.0625 * 25²)

C(d) = 220 / (1.221 * 625)

C(d) = 220 / 763.125

C(d) = 0.288

Therefore, the drag coefficient is 0.288

3 0

3 years ago

Which of the following is true Select one: a. HTML stands for Hyper Text Markup Language is a language for describing web pages

Free_Kalibri [48]

Answer:

The answer to the above question is option C (HTML stands for Hyper Text Markup Language is a language for describing web pages and not a programming language).

Explanation:

HTML stands for Hypertext Markup Language.

HTML is a web language that allows users to create and structure sections, paragraphs, headings, links, and block quotes to define the structure of web pages by using various tags.

HTML describes the structure of a web page semantically and HTML elements are the building blocks of HTML pages.

HTML runs natively in every web browser. When working with HTML, simple code structures (tags and attributes) are used to mark up a website page. To identify HTML documents, they are files that end with a .html or .htm extension.

HTML is not a programming language, because it doesn't have the ability to be used as functional purposes, it can only be used for structural purposes. HTML only contains a set of rules for encoding documents in a format that is both human and machine readable.

HTML is also not a sequential programming language (Sequential languages are languages that were designed for writing sequential programs), as one cannot encode logical instructions to a computer processor using HTML.

7 0

3 years ago