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Which of the following hardness tests does not measure the indentation hardness of metals and alloys ?
What is the APGAR scale? A. Scale to measure the height of mountains B. Time Measuring Scale C. Scale to determine the physical condition of a newborn D. Longevity scale
Which of the following tests are microhardness tests? P. Brinell Hardness Q. Rockwell Hardness R. Knoop Hardness S. Vickers Hardness
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
Arrange in the correct sequence from the lowest to the highest scale of measurement.
1. Interval scale
2. Ordinal scale
3. Ratio scale
4. Nominal scale
A sample of water when tested for hardness, gave total hardness value of 450 mg/l, and alkalinity value of 150 mg/l (on CaCO3 scale) respectively. The carbonate and noncarbonate hardness of the sample (in mg/l units) are respectively:
Four students are looking at a map of India with scale of 1 cm = 100 km. Student 1: Let's draw a large scale map our colony now. Student 2: Why do you feel we need a large paper to draw our colony? A small one is enough. Student 3: Large scale does not mean large paper. We need to change the scale. Let's make it 1 cm = 500 km. Student 4: No no, since we only need to draw our colony, a centimeter can show much less distance. Arrange the four students in increasing order of the conceptual clarity (i.e. from least clear to most clear)
Which one of the following is not an indentation hardness test?
Which of the following statements is correct regarding the map scale? I. Representative fraction method of representing the scale is completely independent of unit of measurement. II. Vernier scale and diagonal scale are types of map scales.
Assertion A): U-shaped long-run average cost curve is based on the assumption that economies of scale prevails at small levels of production and diseconomies of scale prevails at larger level of production. Reason R): Decreasing returns to scale arises primarily because as the scale of operation increases, it becomes even more difficult to manage the firm effectively. In the context of the above two statements, which one of the following codes is correct?