- (A) Spraying water
- (B) Blanketting the area with nitrogen atmosphere
- (C) Fire fighting foam
- (D) None of these
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- (A) A soft magnetic material should have high permeability and small area of hysteresis loop
- (B) Poisson’s ratio of high melting point metals is more than unity
- (C) Solders generally melt at less than 185°C
- (D) Steel produced by
- (A) Hard
- (B) Elastic
- (C) Ductile
- (D) Brittle
- (A) Increase
- (B) Decrease
- (C) Remain unaffected
- (D) May increase or decrease; depends on the thickness of each layer
- (A) Rigid
- (B) Tough
- (C) Ductile
- (D) Plastic
- (A) More
- (B) Equal
- (C) Less
- (D) Double
- (A) Wet bulb temperature=dry bulb temperature
- (B) Wet bulb temperature=dew point temperature
- (C) Saturation temperature=dew point temperature
- (D) All ‘A’, ‘B’ & ‘C’
- (A) Promotes graphite module formation
- (B) Improves its ductility
- (C) Does not promote graphite flakes formation
- (D) Increases the fluidity of molten metal
- (A) Wrought iron
- (B) Stainless steel
- (C) Mild steel
- (D) High speed steel
- (A) Frequency counter
- (B) Tachometer
- (C) Strobometer
- (D) Speedometer
