Engineering Properties of Biological Material Question Answer

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Engineering Properties of Biological Material questions and answers pdf

 

1. The property which is useful and necessary in the design and operation of various equipment employed in the field of agricultural processing

(A)  Engineering properties

(B)  Mechanical properties

(C)  Chemical properties

(D)  None of the above

Ans:- (A)  Engineering properties

 

2. Which of the following physical properties are

(A)  Size and shape

(B)  Surface area

(C)  Volume density

(D)  All

Ans:- (D)  All

 

3. Various type of cleaning grading and separation equipment are designed on the basis of

(A)  Physical properties of seed

(B)  Mechanical

(C)  Chemical

(D)  Aero dynamic

Ans:- (A)  Physical properties of seed

 

4. Roundness is a measure of the sharpness of the

(A)  Solid material

(B)  Liquid material

(C)  Spray material

(D)  Semi solid material

Ans:- (A)  Solid material

 

5. The most widely accepted methods for determining the roundness of irregular particles are

(A)  Roundness = largest projected area of the particles when it is in natural rest position/ area of smallest circumscribing circle

(B)  Roundness = area of smallest circumscribing circle/ largest projected area of the particles when it is in natural rest position

(C)  All of the above

(D)  None of the above

Ans:- (A)  Roundness = largest projected area of the particles when it is in natural rest position/ area of smallest circumscribing circle

 

6. The ratio of the diameter of a sphere of the same volume as that of the particles of the smallest circumscribing sphere

(A)  Sphericity

(B)  Roundness

(C)  Circular

(D)  Square

Ans:- (A)  Sphericity

 

7. The geometric mean diameter of the particle is also called

(A)  Equivalent diameter

(B)  Major diameter

(C)  Minor diameter

(D)  All of the above

Ans:- (A)  Equivalent diameter

 

8. The air velocity at which particles remains in suspended state in a vertical pipe

(A)  Terminal velocity

(B)  Terminal force

(C)  Drag force

(D)  Angle of repose

Ans:- (A)  Terminal velocity

 

9. The drag coefficient of the material and its resistance to air flow depends upon

(A)  Bed thickness of the material

(B)  Type shape and size of grain

(C)  Air velocity

(D)  Packing of material

(E)  All of the above

Ans:- (E)  All of the above

 

10. The frictional forces acting between surface of contact as rest with respect to each other

(A)  Static friction

(B)  Dynamic friction

(C)  Angle of repose

(D)  All of the above

Ans:- (C)  Angle of repose

 


 

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