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.Management Sciences
Category: Chemical Engineering Basics
_________________ furnace is generally used in the non-ferrous foundries ?
A. Direct arc
B. Indirect arc
C. Resistance
D. Induction
The following thermocouple may be used for measuring temperature upto 1873°K__________________?
A. Chromel-alumel
B. Copper-constantan
C. Platinum-platinum rhodium
D. Iron-constantan
Which of the following is not used as a bearing material ?
A. Copper-lead alloys
B. Babbitts
C. Bronzes
D. Cermets
_______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?
A. Beryllium
B. Zirconia
C. Alumina
D. Magnesia
Alloying elements present in Haynes stellite, which has superior performance than high speed steel, are____________________?
A. Nickel, cobalt & chromium
B. Tungsten, chromium & cobalt
C. Manganese, chromium & cobalt
D. Tungsten, molybdenum & nickel
Tip of the match stick contains a mixture of________________?
A. K + S
B. K + S + K2Cr2O7
C. S + K2Cr2O7 + White P
D. None of these
Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?
A. Wood’s metal
B. Babbitt metal
C. Monel metal
D. Duralumin
Induced draft fans provided in large thermal power plant boilers have __________________ blades?
A. Forward curved
B. Backward curved
C. Double curved
D. Radial or straight
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