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Q. Describe Dry and wet parting materials?
Dry parting materials: These are applied by dusting. These include : charcoal, ground bone and limestone, lycopodium(a yellow vegetable matter), tripolite(a silicate rock), ground nut shells, Talc(Magnesium silicate,3MgO,4SiO2.H2O)and Calcium phosphate.
Wet parting materials: These are not used with wooden patterns, but are used mostly in machine moulding when metal patterns are used. They are wax based preparation, petroleum jelly mixed with oil, paraffin and stearic acid.
Embrittlement For use, at high strength, coupled with good notch toughness, all weld structure must be Tempered low carbon martensite. Carbon and alloy steels having more than
Q. Show Hazards associated with plants? Hazards associated with plants will typically include the following: • Inherent fire hazards presented by the release of flammable g
The input-output curve of a 60 MW power station is provided by : I = 10 6 [8 + 8L + 0.4L 2 ] Kcl/hour where I is the input in the Kcal/hour and L is the load in MW. (a) Ev
In motorcycle servicing we studied about various service tips for motorcycle servicing. These steps will ensure proper servicing of motorcycle and as a result customers will trust
Moment of couple: Sol.: The moment of couple is the product of the force (that is one of the forces of two equal and opposite parallel forces) and the arm of couple. Math
a masonry pier 3m*4m supports vertical load of 600kn at point (1.2,1),find stresses at corner of pier
What are the two ways of pile foundation Pile foundations can be installed in two ways. Timber, steel and precast concrete piles, are driven from the ground using hammers till
law of static friction
Need of a spectrophotometer: The specific instructions will differ with other models, but the principles remain. 1. The instrument must have been warm for at least 15 min.
Determine the resultant of the system of forces: Four forces act on a body as illustrated in Figure. Determine the resultant of the system of forces. Figure Sol
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