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The Brinell hardness measurement of a material is made by applying a 500 kg load with a 10 mm ball indentor. If the indentation diameter is 6 mm, the Brinell hardness (kg/mm2) will be
Suppose Brinell hardness measurement is made from a nonstandard ball of diameter 5 mm. If the load applied in 10 mm standard ball is 3000 kg, then what load should be applied on the 5 mm ball to get the consistent reading in hardness measurement?
A steel ball (density ρsteel = 7200 kg/m3) is placed in an upward moving liquid AI (density ρal = 2360 kg/m3, viscosity μAl = 1 × 10-3 Pa.s and Reynolds number = 5 × 105). The force (F) exerted on the steel ball is expressed as F = fπR2(ρAl V2/2)
where, f is friction factor (= 0.2), v is the velocity of liquid AI and R is the radius of steel ball.
The force exerted on the steel ball is
Consider the following question and statements and decide which of the statements is sufficient to answer the question. There are seven balls of different size and colors: green yellow, blue, orange, red, pink and black. What is the order of the balls from largest to smallest? Statements: 1. The red ball is larger than the green ball. 2. The pink ball is the smallest. 3. The blue ball is the largest. 4. The green ball is larger than the yellow ball. 5. The yellow ball is larger than the orange and black balls.
Consider the following question and statements and decide which of the statements is sufficient to answer the question. There are seven balls of different size and colors: green, yellow, blue, orange, red, pink and black. What is the order of the balls from largest to smallest? Statements: 1. The red ball is larger than the green ball. 2. The pink ball is the smallest. 3. The blue ball is the largest. 4. The green ball is larger than the yellow ball. 5. The yellow ball is larger than the orange and black balls. 
Given below are two quantities named I and II. Based on the given information, you have to determine the relation between the two quantities. You should use the given data and your knowledge of Mathematics to choose among the possible answers. A man has two balls. The ratio of radius of first ball to that of the second ball is 7 : 3. Quantity I: If man cut the first ball from middle and difference between total surface area of part of first ball and total surface area of second ball is 1538.46cm2, then find the radius of smaller ball. Quantity II: If the sum of radius of two balls is 30, then what is the radius of first ball?
Which of the following tests are microhardness tests? P. Brinell Hardness Q. Rockwell Hardness R. Knoop Hardness S. Vickers Hardness
Brinell hardness measurement made with a 10 mm diameter steel ball at a load of 1000 kg gives an indentation of diameter 4 mm in a material. The BHN of this material is approximately
For hardness test of copper in Brinell hardness tester, the diameter of ball is ___________
A spherical ball of lead, 3 cm in diameter is melted and recast into three spherical ball. The diameter of two of these are 1.5 cm and 2 cm respectively. The diameter of the third ball is :