Engineering Properties of Biological Materials and Food Quality Mid - I, September - 2014

1.When plane of rupture meets the grain surface before it strikes the opposite side, then it is a
  • Deep bin
  • Shallow bin
  • Vertical bin
  • Horizontal bin
Answer: B
2.For the grains of approximately the same moisture content and density
  • Angle of repose is generally higher than angle of internal friction
  • Angle of repose is generally lower than angle of internal friction
  • Both angles are same
  • None
Answer: A
3.Which of the following is correct
  • Thermal conductivity of single grain is more than bulk grain
  • Thermal conductivity of single grain is less than bulk grain
  • Both have same thermal conductivity
  • None
Answer: A
4.Choose the correct statement
  • In Maxwell model total stress is divided between spring and dashpot
  • In Kelvin model total strain is divided between spring and dashpot
  • In Kelvin model total stress is divided between spring and dashpot
  • None
Answer: C
5.Which of the following is correct statement
  • Frictional drag is due to pressure distribution around the body
  • Profile drag is due to tangential forces around the body
  • Frictional drag is due to tangential forces on the body
  • None
Answer: C
6.The value of angle of internal friction is equal to
  • Tangent of coefficient of friction
  • Cosecant of coefficient of friction
  • Inverse of coefficient of friction
  • None
Answer: A
7.Stress corresponding to rupture point is
  • Ultimate strength
  • Yield strength
  • None
  • Either ‘a’ or ‘b’
Answer: A
8.When the flow curve is convex to the shear stress axis, the flow is called
  • Pseudoplastic
  • Dilatant
  • Newtonian
  • None
Answer: A
9.In a Maxwell model, spring and dashpot are arranged in
  • Series
  • Parallel
  • Perpendicular
  • None
Answer: A
10.When two containers of same material and volume are filled one with water and the other with
sunflower oil
  • Weight of two containers is same
  • Container with water weighs more than container with oil
  • Container with oil weighs more than container with water
  • None
Answer: B
11.Shape flattened at the stem end and apex is called______________
Answer: Oblate
12.The ratio of stress to strain is known as modulus while the ratio of strain to stress is known as
___________
Answer: Compliance
13.Rheological science deals with the deformation and ____________of the material under action of
applied force.
Answer: Flow
14.At constant stress, the deformation with time when the material is suddenly subjected to a dead load
is called__________
Answer: Creep
15.A point on Force-Deformation curve at which an increase in deformation is observed with a
decrease or no change of force is called__________point
Answer: Bio-yield
16.Drag force on a blunt object like a sphere is an example of __________drag.
Answer: Pressure/Profile
17.Resistance that occurs when a round object such as a ball or tire rolls on a flat surface is
called____________.
Answer: Rolling resistance
18.Angle of repose ____________with the increase of moisture content of material.
Answer: Increases
19.The flow problem arching can be prevented by sufficiently ________outlets
Answer: Large
20.In case of bulk granular materials, the slope of yield locus is the angle of __________
Answer: Internal friction