- (A) brittle when cold
- (B) brittle when hot
- (C) brittle under all conditions
- (D) ductile at high temperature
- (E) hard when hot
Mechanical Engineering Mcqs
- (A) brittle
- (B) ductile
- (C) elastic
- (D) plastic
- (E) tough
- (A) Brinell
- (B) Rockwell
- (C) Vicker
- (D) Shore’s sceleroscope
- (E) none of the above
- (A) decreasing the cross-section area of’ bar
- (B) increasing the cross-section area of bar
- (C) remain unaffected with cross-section area
- (D) would depend upon other factors
- (E) none of the above
- (A) be independent of ratio of mass of load W to mass of bar (y)
- (B) increase with increase in y
- (C) decrease with decrease in y
- (D) depend on other considerations
- (E) none of the above
- (A) variation in properties of material from point to point in a member
- (B) pitting at’points or areas at which loads on a member are applied
- (C) abrupt change of section
- (D) all of the above
- (E) none of the above
- (A) increases the seriousness of static load-ing stress concentration
- (B) lessens the seriousness of static load¬ing stress concentration
- (C) has no effect on it
- (D) depends on other considerations
- (E) none of the above
- (A) electroplating
- (B) polishing
- (C) coating
- (D) shot peening
- (E) heat treating
- (A) same
- (B) 1/2
- (C) 1/3
- (D) 1/4
- (E) 2/3
- (A) Young’s modulus
- (B) coefficient of elasticity
- (C) elastic limit
- (D) ultimate tensile strength
- (E) endurance limit
