Answer:
Explained
Explanation:
Cold working: It is plastic deformation of material at temperature below recrystallization temperature. whereas hot working is deforming material above the recrystallization temperature.
Given melting point temp of lead is 327° C and lead recrystallizes at about
0.3 to 0.5 times melting temperature which will be higher that 20°C. Hence we can conclude that at 20°C lead will under go cold working only.
Answer=
low-frequency EMFs pose little danger to human health. ... Exposure to large levels of high-frequency EMFs is known to damage human DNA and cells
Explanation:
Capillary action occurs When the adhesion to the walls stronger than dirt cohesive forces between a liquid molecules. the head towards Capillery action will take water in a uniform circular is limited by surface tension and, of course, gravity.
Answer:
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Answer and Explanation:
The criteria defined for the instruments that changes rapidly with time, ae called dynamic characteristics. These characteristics are namely
1. Speed of response
2. Fidelity
3. Dynamic error
4. Measuring lag
Speed of response
It is the speed with which a measurement system responds to changes in the measured quantity.
Fidelity
It is the degree to which a measurement system indicates changes in the measured quantity without dynamic error.
Dynamic error
It is the difference between the true value of the quantity changing with time and the value indicated by the measurement system if no static error is assumed. It is also known as measurement error.
Measuring lag
It is the delay in the response of a measurement system to changes in the measured quantity. It is divided into two as follows.
