A. Pewter
B. White
C. Babbitt
D. Gun
Related Mcqs:
- Which of the following is not used as a bearing material ?
A. Copper-lead alloys
B. Babbitts
C. Bronzes
D. Cermets - Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting) ?
A. V/A
B. V/A2
C. V2/A
D. V2/A2 - ____________________ flux is used for the extraction of metal from its self fluxing ores?
A. No
B. Acid
C. Basic
D. Neutral - Yield strength of a polycrystalline metal with an average grain size „d’, is proportional to ____________________?
A. d1/2
B. d-1/2
C. d
D. d-1 - Stresses encountered in the metal forming processes are less than the _____________ of the material?
A. Fracture strength
B. Yield strength
C. Elastic limit
D. Limit of proportionality - What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively ?
A. 2
B. 8
C. 10
D. 40 - The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is__________________?
A. More
B. Less
C. Same
D. More but less than the diameter of bolt - The life of a ball bearing is inversely proportional to________________?
A. (Load)1
B. (Load)2
C. (Load)3
D. (Load)0.33 - In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet ?
A. Zirconia
B. Alumina
C. Bakelite
D. Tungsten carbide - The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the _____________ point of the material?
A. Elastic
B. Ultimate
C. Yielding
D. Breaking
