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Metallurgical Engineering
Mineral Dressing In Metallurgy
Difficulty: Medium
The figure below shows the cumulative size distribution of particles of a crushed mineral. 10 kg of this material is first passed through a sieve of size 400 micron and then through a sieve of size 300 micron. The weight of mineral (in kg ) that is retained on the 300 micron sieve is . . . . . . . .
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'W'h'i'c'h' 'o'f' 't'h'e' 'f'o'l'l'o'w'i'n'g' 'm'e't'a'l's' 'i's' 'l'o'w'e's't' 'n'o'b'l'e' 'i'n' 't'h'e' 'G'a'l'v'a'n'i'c' 's'e'r'i'e's'?'
A fluid is flowing with a velocity of 0.5 m/s on a plate moving with a velocity of 0.01 m/s in the same direction. The velocity at the interface of the fluid and plate is
Match those listed in Group 1 with the NDT methods listed in Group 2 . Group 1 Group 2 P. Penetrameter 1. Ultrasonic test Q. Differential coil probe 2. Dye-penetrant test R. Piezo-electric probe 3. X-ray radiography S. Developer 4. Accoustic emission test
. . . . . . . . is a neutral flux.
The type of discontinuity potentially most harmful to the useful life of a part is