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The accompanying image shows a large cube made of dark and white small sugar cubes. Small cubes of the diagonally arranged row of the bottom surface of the large cube, small cubes of the row with one face on the right-hand surface of the large cube, small cubes of the row with one face on the front surface of the large cube, and small cubes of the column with one face on the top of large cube surface are all dark. Select the number of small white cubes of the large cube.
Consider the following statements: In case of helical gears, teeth are cut at an angle to the axis of rotation of the gears. 1) Helix angle introduces another ratio called axial contact ratio. 2) Transverse contact ratio is equal to axial contact ratio in helical gears. 3) Large transverse contact ratio does not allow multiple teeth to share the load. 4) Large axial contact ratio will cause larger axial force component Which of the above statements are correct?
Large, medium and small ships are used to bring water. 4 large ships carry as much water as 7 small ships, 3 medium ships carry the same amount of water as 2 large ships and 1 small ship. 15 large, 7 medium and 14 small ships, each made 36 journeys and brought a certain quantity of water. In how many journeys would 12 large, 14 medium and 21 small ships bring the same quantity ?
The following question is accompanied by three statements (I), (II), and (III). You have to determine which statements(s) is/are sufficient/necessary to answer the questions. What will be the ratio of water and whisky in the resultant mixture, if all three vessels are emptied into a single large container? (Assume large container is large enough to contain the mixture from all 3 small vessels). I. If all three small vessels, each of 100L capacity, are filled with the mixture of whisky and water. II. Capacity of single large container is 500L. III. The ratio of whisky and water are 3 : 2, 4 : 1 and 7 : 3 in the respective vessels.
Spherical reflectors used in solar devices to
Which type of mirror is used as reflectors in torches, vehicle headlights to get the powerful beams of light?
Reflectors are used in a nuclear reactor to control the speed of neutrons.
mpSi and μpSi structures are used to develop distributed Bragg reflectors.
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)
In the following question below are given some statements is followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some tables are large. II. No large is blue. Conclusions: I. All large are tables. II. Some blue are large.