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AfilCa [17]
3 years ago
7

(Blank) welding involves manual welding with equipment anomalously controls one or more of the windy conditions while (blank) we

lding using equipment that requires only occasional or no observation for the welding I know manual adjustment of the equipment control
A) Semi automatic, Automatic
B) Fixed automatic, Flexible Automation
C) Automatic, Semi Automatic
D) Flexible Automatic, Fixed Automatic
Engineering
1 answer:
shepuryov [24]3 years ago
8 0

Answer:

D.

Explanation:

In automated welding, defined as “welding with equipment that requires only occasional or no observation of the weld, and no manual adjustment of the equipment controls,” the welder's involvement is limited to activating the machine to initiate the welding cycle and observing the weld on an intermittent basis.

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Explanation:

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1 year ago
Que a state properties of Sounds ] 1 laws of replactions of light 2 2​
Vanyuwa [196]

Answer:

A sound is an energy source, much like electricity, heat or light. That makes a loud ringing noise when you hit a bell. Now put your finger on the bell after you’ve hit it, rather than just listening to the bell. You can feel it shaking and this motion or moving, i.e., the body’s to and fro motion is termed as vibration.

Sound is a vibration that passes through the medium in the form of longitudinal waves. It implies that sound waves are waves wherein the particles of the medium vibrate parallel to the direction of wave propagation. Sound forms are known as mechanical waves because they require a propagating medium. The medium may be

Solids

Liquids

Gases

Properties of sound

Frequency or pitch

Frequency is the number of cycles of periodic compression and rarefaction which occur every second as the wave propagates via the medium.

The human ear’s interpretation of the sound level within the range of human hearing is called the pitch.

The higher the sound frequency, the higher the pitch is and a lower frequency means a lower pitch.

Speed

The speed at which the sound waves travel via the medium is called sound speed. The speed of sound for different mediums is different. Sound moves in solids faster, as the atoms in a solid are packed tightly.

Amplitude or Loudness

The loudness determines the amplitude of the sound waves.

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The amplitude is a measure of the vibrational energy.

More energetic vibration is responsible for a greater amplitude.

Timbre

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Timbre based on what substance the sound is created from.

Reflection of sound

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Explanation:

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