A. Suppresses any stress concentration produced in the parts
B. Enhances the yield point of the material
C. Introduces a compressive layer on the surface
D. Produces a better surface finish
Related Mcqs:
- A material being tested for endurance strength is subjected to the _____________ load?
A. Impact
B. Completely reversed
C. Dynamic
D. Static & dynamic - A material being tested for endurance strength is subjected to the _______________ load ?
A. Impact
B. Completely reversed
C. Dynamic
D. Static & dynamic - Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot_____________________?
A. Piercing
B. Spinning
C. Drawing
D. Extrusion - Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than ?
A. 5
B. 10
C. 20
D. 35 - The best lubricants for a machine working at high temperature & load is_________________?
A. Grease
B. Solid lubricant
C. Animal oils
D. Mineral oils - High speed steel tools retain their hardness upto a temperature of __________________ °C?
A. 500
B. 750
C. 900
D. 1100 - The ability of tool steel to resist softening at high temperatures is termed as __________________ hardness?
A. Red
B. Extended
C. Super
D. Extreme - A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?
A. 0
B. 0.33
C. 0.44
D. 0.25 - Particle nature of cathode rays is proved due to the fact that they ________________?
A. Travel in a straight line
B. Get deflected by magnetic electric field
C. Produce fluorescence
D. Heat the exposed material - _______________ 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
