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What else can I help you with?
Why should the coefficient of thermal expansion of a refractory metal be the lowest?
refractory metals have high melting points and are used in extremely hot environments; if expansion coefficient is lower this prevents high stresses that can develop due to thermal gradients during the high heat up. It helps to have high thermal conductivity as well
Which sample had the lowest final temperature?
Sample B had the lowest final temperature.
What classification of stars has the lowest surface temperature?
Black dwarfs have the lowest surface temperature.
In dothan year 2010 what month had the lowest temperature?
in dothan Alabama the year 2010 what month had the lowest temperature
Why does the thermometer fill with mercury?
Mercury is used in thermometers because it has a high coefficient of expansion, meaning it expands and contracts with temperature changes, making it easy to read. It also has a wide temperature range in which it remains liquid, allowing for accurate measurement in various conditions.
What is the surface area of piezoelectric crystal?
All the (pairs of ) surfaces of a piezoelectric crystal do not have the same piezo properties. And the temperature coefficient also alters at different angles through the crystal. So commonly, the 'BT' cut is the one with the lowest temperature coefficient.
What metal has lowest thermal conductivity?
Mercury, apparently Bismuth has the lowest thermal condctivity of metals that are solid at room temperature.
Why a tightly fitting metal cap is opened by heating it slightly?
The metal cap has a high expansion coefficient when temperature rises. As it expands and the grip loosens.
What happens when the temperature of a forward biased diode is increased?
What happens depends on the temperature coefficient of the diode. If that diode has a positive temperature coefficient, it resistance increases with increased temperature. A diode with a negative temperature coefficient does the opposite.
What is the difference between positive and negative temperature coefficient of resistance?
Negative temperature coefficient of resistance means that as the temperature of a piece of wire or a strip of semiconducting material increases, the electrical resistance of that material decreases.
Fullform of ntc and ptc?
ntc: negative temperature coefficient ptc: positive temperature coefficient
Does a safe reactor have a positive or negative 'temperature coefficient of reactivity'?
negative 'temperature coefficient of reactivity'
How the coefficient of viscosity of a liquid changes with temperature?
The coefficient of viscosity of liquids decreases with an increases in temperature.
What is temperature cofficient in pn junction?
Temperature coefficient of the PN intersection voltage to balance the temperature coefficient of the warm voltage.
Which non metal has the lowest melting point?
Helium has the lowest melting point of all the non-metals. It melts at a temperature of -272.2 degrees Celsius.
What is the relationship between resistance and temperature?
• ntc 'negative temperature coefficient': its resistance decreases as the temperature increases• ptc 'positive temperature coefficient': its resistance increases as the temperature increases
What Materials that have positive temperature coefficient?
Some materials with a positive temperature coefficient of resistance include silicon, germanium, and thermistors made of certain metal oxides like manganese, cobalt, and copper. These materials exhibit an increase in resistance with an increase in temperature, making them useful in temperature-sensing applications.
