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Olenka [21]
3 years ago
9

Hãy trình bày sự hiểu biết của bạn về đo dòng điện

Engineering
1 answer:
Sidana [21]3 years ago
8 0

Answer:

-Khái niệm:

Đo dòng điện là sử dụng các dụng cụ như ôm kê, vôn kế, ampe kế, tần số kế… để xác định các đại lượng vật lý của dòng điện

-Đo lường điện để làm gì?

Phát hiện hư hỏng sự cố trong mạch điện và các thiết bị vi mạch

Xác định các giá trị cần đo

Đánh giá chất lượng của các thiết bị sau sản xuất

Xác định thông số kỹ thuật của thiết bị

-Phân loại dụng cụ đo điện: Hiên nay có 2 phương pháp phân loại chính

a. Theo nguyên lý làm việc

Dụng cụ đo kiểu điện từ

Dụng cụ đo kiểu điện động

Dụng cụ đo kiểu cảm ứng

Dụng cụ đo kiểu từ điện

b. Theo đai lượng, giá trị cần đo

+Đo điện năng: Ví dụ công tơ điện

+Đo điện áp: Ví dụ: Vôn kế

+Đo dòng điện: Ví dụ: Ampe kế

+Đo công suất: Oát kế

+Đo điện trở: Ôm kế

Sai số khi đo: Khi đo lường luôn xảy ra các sai số

Sai số tương đối: Là tỷ lệ % của sự chênh lệch giữa giá trị đo được và giá trị thự

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See attachments for answers.

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Un buque de 500ton de desplazamiento tiene un KG de 5m y un KM de 7.5, la embarcación recibe un carga de 700ton con un KG de 4m.
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Given the front and right views, create an AutoCAD isometric of the object. Save the drawing as lab5c.dwg. Grid size is 10mm. Yo
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1.Use CTRL-C to copy the lines to the Windows clipboard. Go to the 2D drawing and give the PASTESPEC (Paste Special) command. This will paste an image of the selected geometry into the other drawing. SInce it is an image and not AutoCAD entities the image quality will be limited.

2.Isometric drawing in AutoCAD 2014 and older versions:

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3.To Display a Preset 3D View

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Select a preset view (Top, Bottom, Left, and so on).

4.If you aren't in model space, double-click inside the viewport to enter model space.

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Positive displacement pump has enlarged  cavity on the suction side and decreasing cavity on the discharge side and in  positive displacement pump

the amount of fluid captured and inside and then discharged is same.

There are three type of positive displacement pump

a) reciprocating pump is the pump which two valve during suction outlet valve is closed and  for delivery the inlet valve is closed and pump is used for discharge

b) rotary pump fluid move with the help of rotary the rotation of rotary displaces water.

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