C:-Both of these
D:-None of these
Correct Answer:-Question Cancelled
Question59:-Which of the following is not good for thermoforming?
A:-PP
B:-PE
C:-PF
D:-PS
Correct Answer:- Option-C
Question60:-Which of the following is the best for uniform filler dispersion?
A:-Two roll mill
B:-Banbury
:-Intermix
D:-Kneader
Correct Answer:- Option-A
Question61:-Viscosity has the unit
A:-Pa. S
B:-N/ sq.m
C:-Mpa
D:-dN.m.s
Correct Answer:- Option-A
Question62:-Decrease of viscosity with increasing shear rate is known as
A:-Newtonian behaviour
-Bingham plastics
C:-Dilatant behaviour
D:-Pseudoplastic behaviour
Correct Answer:- Option-D
Question63:-The unit of shear rate is
A:-meter per second
-Per second
C:-meter per second square
D:-Newton per second
Correct Answer:- Option-B
Question64:-Yield stress is shown by
A:-Pseudoplastic materials
-Dilatant materials
C:-Bingham plastics
D:-Newtonian liquids
Correct Answer:- Option-C
Question65:-Thixotropy is associated with reduction in viscosity
A:-With time at constant shear rate
B:-With shear rate
C:-With time and shear rate
D:-With shear stress
Correct Answer:- Option-A
Question66:-In rheology relaxation time is defined as
A:-Viscosity / modulus
:-Modulus / yield stress
C:-Time for 50% reduction in viscosity
D:-Time for extrudate to recover
Correct Answer:- Option-A
Question67:-Bagley correction is done to account for
A:-Exit effect
-Slip at wall
C:-Stick-slip effect
D:-Entry effect
Correct Answer:- Option-D
Question68:-Apparent shear rate for a capillary flow is related to
A:-Volume flow rate and I/d ratio