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.Management Sciences
Category: Chemical Engineering Basics
The highest stress that a material can withstand for a specified length of time without excessive deformation is called the ____________ strength ?
A. Creep
B. Endurance
C. Fatigue
D. None of these
Speed of a submarine in deep sea & that of an aeroplane is measured by a/an___________________?
A. Pitot tube
B. Hot wire anemometer
C. Rotameter
D. Stroboscope
The surface tension of a liquid, at critical temperature is____________________?
A. Indeterminate
B. Zero
C. Infinity
D. Same as that at any other temperature
Brazing filler metal used for joining steel plates_________________?
A. Melts below the melting points of base metals
B. Melts below 300°C
C. Is copper phosphorous alloy
D. Is copper
A compact estimate about the amount of materials handling between various work stations is obtained from the_____________________?
A. Gantt chart
B. Bin chart
C. String diagram
D. Travel chart
Which of the following fastening devices has its both ends threaded ?
A. Bolt
B. Stud
C. Set screw
D. Split nut
Identify the correct statement with reference to the extractive metallurgy of aluminium ?
A. The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3
B. Approximately 80% of the aluminium deposited on the cathode comes from cryolite
C. Sodium is deposited along with aluminium, but is immediately vaporised
D. Anode effect sets in when the cryolite concentration goes below 40%.
Chromium molybdenum steel cannot be welded using ______________ welding ?
A. Thermit
B. Electrical resistance
C. Oxy-acetylene
D. Any of these
Hydrogen in liquid steels is dissolved_________________?
A. As tiny gas bubbles
B. In the atomic form
C. In the ionic form
D. In the molecular form
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