- (A) Decreases with increase in strain hardening tendencies
- (B) Decreases with increase in hardness, in general
- (C) Depend on the composition, microstructure and physical & mechanical properties
- (D) Decreases with increases in tensile strength & decrease in grain size
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- (A) Nickel
- (B) Cobalt
- (C) Aluminium
- (D) Iron
- (A) Reduces the upper shelf energy
- (B) Increasing the ductility transition temperature
- (C) Decreases brittleness
- (D) Decreases hardness
- (A) Large number of slip systems
- (B) High work hardening rate
- (C) Coarse grain size
- (D) Low stacking fault energy
- (A) 20
- (B) 60
- (C) 120
- (D) ∞
- (A) 250
- (B) 500
- (C) 1000
- (D) 3000
- (A) 370
- (B) 340
- (C) 320
- (D) 300
- (A) Engine having carburettor
- (B) Diesel engine
- (C) Compression ignition engine
- (D) Both
- (A) Filmwise condensation gives a lower heat transfer rate than the dropwise condensation
- (B) Suitable coating or vapour additive is used to promote film wise condensation
- (C) If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it
- (D) Reynolds number of condensing liquid is based on its mass flow rate
- (A) Hot worked materials are subjected to annealing to remove internal stresses
- (B) Annealing of steel hardens it slightly
- (C) Normalising of a material induces stresses
- (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness
