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Q. How can we use of Shrinkage allowance?
Since metal shrinks on solidification and contracts further on cooling to room temperature, linear dimensions of the pattern is increased in respect of those of the finishing casting to be obtained. This is called "shrinkage allowance". It is given as mm/ m.
Typical values of shrinkage allowance for various metals re given below:
C.I. Malleable iron = 10mm/m
Brass, Cu, Al = 15mm/m
Steel = 20mm/m Zinc,
Lead = 25mm/m
There are various refrigeration systems employing various methods. State any seven (7) refrigeration systems, mention the method(s) employed to attain low temperatures, and state a
2*2
Q. What do you mean by Contractility? Heart being a muscular pump the ability to eject blood depends on the ability to contract. Another factor is the resistance in the vascula
differentiate between kinematic chain and mechanisms
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(a) Derive a mathematical expression for the efficiency of a dual cycle. (b) An oil Engine working on a dual combustion cycle has a compression ratio 10 and cut-off takes place
what is dryness fraction of dry air
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Illustrate modified Rankine cycle in detail with p-v and T-S diagrams. Explain Carnot cycle in detail with T-S and P-V diagram, and also write expression for thermal efficiency,
Symmetric Central Force A central force is spherically if the magnitude of the force does not depend on the direction (angles θ , or Ø ) of the particle but only on distance
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