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Why are splines are better than keys?
Splines are stronger than the shear strength of a key. More than one key would be stronger than one. eD
Is 3000 dm greater than less than or equal to 3 m?
greater than
Is 178 millimeters less than greater than or equal to 15 centimeters?
178 mm = 17.8 cm which is greater than 15 cm
Are diamonds sharper than steel?
Diamonds aren't always sharper, but they can be manufactured in such a way. Diamonds are harder than steel.
What is a angle greater than 180?
An angle greater than 180 degrees is a reflex angle
Is the shear modulus of steel greater than jelly?
yes
What is shear modulus depends on?
Shear modulus, which is also often referred to as the modulus of rigidity or torsion modulus, is a measure of the rigid or stiff nature of different types of solid materials. It is derived from the material's ratio of its shear stress value to that of shear strain. Shear stress is a value of how much force is applied to a square area of a material, usually measured in pressure values of pascals. Strain is the amount that the material has deformed under stress divided by its original length. The shear modulus value is always a positive number and is expressed as an amount of force per unit area, which is generally recorded as metric gigapascals (GPa) because the values are more practical than English equivalents.
What is the tangent modulus of mild steel?
The tangent modulus of steel varies depending on if the steel has yielded.If the steel has not yielded, and is still elastic (stresses less than approx. 275 MPa (39885 Psi) the tangent modulus will be equal to the Young's Modulus, 205 GPa (39885367)If the steel has yielded, the tangent modulus will be related by the Ramsberg-Osgood Equation, but a reasonable value to use would be approx. 1.5 GPa (2175565 Psi)
What are the values r cant take?
Any value whose modulus is greater than 1.
Why do sound waves travel faster through metal than air?
velocity of sound is proportional to modulus of elasticity of the medium. Metals have greater modulus of elasticity compared to that of air. Hence the result
Measurement of yong's modulus for rectangular bar material?
In order to have your question answered, you would have to state which bar material. Young's Modulus is different and specific to the material to which it is applied. It will be different for steel than for iron or aluminum.
Why springs are made of steel not of iron?
It is because steel has a higher elasticity than copper i.e the opposing force of steel is more than that of copper. Elasticity of steel is more than copper because it has a higher value of Young's Modulus.
When comparing a positive number with a negative number which is the greater number?
The positive number is always greater. However, the modulus of a negative number may be greater. Here is the number line. -infinity,.... -5,-4,-3,-2,-1, 0,+1,+2,+3,+4,+5 .... + infinity. So reading the number line, +2 > -4 . However, the modulus of '-4' is greater than the modulus of +2. . It is written as |-4| > |+2|, that is the number four is greater than the number two. Note the pair of vertical lines. NB I have put in the positive (+) sign to compare against the negative (-), however, a number that does not show a sign is read as positive(+).
What are the difference between result obtained from ultrasonic test and triaxial test?
Triaxial testing will yield static strength properties of the material while ultrasonic measurements will give dynamic strength properties. The two can be related to each other by using various relationships between Young's Modulus, Bulk Modulus, Shear Modulus and Poisson's ratio. Static results should be lower than the dynamic results.
Is the speed of sound in steel greater than speed in water?
Yes.
How does the speed in steel compare with the speed in air?
The speed in steel is much greater because, although the density of steel is greater than air the forces are much greater. Check out Wikipedia.org, "The World's Encyclopedia" http://en.wikipedia.org/wiki/Sound#Speed_of_sound
Is brass heavier than steel?
No, steel is generally heavier than brass. Steel is an alloy of iron and carbon with a density greater than that of brass, which is an alloy of copper and zinc.
