Chemical Engineering Basics
Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type

Parallel flow with unequal heat capacities
Counter flow with unequal heat capacities
Counter flow with equal heat capacities
Parallel flow with equal heat capacities

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Chemical Engineering Basics
Which of the following is not a characteristic observed in material failure by fatigue fracture ?

Initiation of crack from below the surface does not occur
Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface
Plastic deformation of material does not occur
Initation of crack occurs on the surface of the machine part

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Chemical Engineering Basics
In extrusion of metals, which of the following statement is true ?

Redundant work is a function of the die angle
Relative motion between the billet surface and the container wall is always present
Hollow ram is used for indirect extrusion
Speed of the extruded material is same as that of ram speed

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