The most efficient shape of a series is that which
A.given a minimum heat loss
B.keeps the metal in molten state for longer period
C.both (A) and (B) above
A.given a minimum heat loss
B.keeps the metal in molten state for longer period
C.both (A) and (B) above
A.Brittleness
B.Ductility
C.Hardness
D.Tensile strength
A.Semi permanent mould casting
B.pressed casting
C.permanent mould or gravity die casting
D.none of the above
A.Impact test
B.Percussion test
C.Radiographic
D.Magnetic particle inspections
A.grains coarser than thinner sections
B.grains finer than thinner sections
C.grains of sme size as rest of the casting
D.none of the above
A.boilers
B.Automobiles
C.Elevators
D.all of the above
A.When average cost is decreasing, it is more than marginal cost
B.When average cost is decreasing, it is less than marginal cost
C.When average cost is increasing, it is more than marginal cost
D.None of the above
A.Low chromium cast iron
B.Low nickel cast iron
C.Low sulphur cost iron
D.Low phosphorous cast iron
A.Gauge
B.Brace
C.Pinchdog
D.Auger bit
A.heated to low temperature and furnace cooled
B.heated by flame and air cooled
C.heated to a temperature around melting point and slowly cooled
D.heated in stages and also cooled in stages