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Mechanical Operations
Mechanical Operations Multiple Choice
Quiz 1
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Q.1
Axial flow impellors have _____
a) > 900
b) < 900
c) > 1800
d) < 1800
Q.2
Radial impellors are ____
a) Parallel
b) Vertical
c) Horizontal
d) Lateral
Q.3
What are the speeds of basket centrifuge?
a) 15,000 rpm
b) 10,000 rpm
c) 50,000 rpm
d) 1000 rpm
Q.4
The degree of separation depends upon the ___
a) Thickness of liquid layer
b) Thickness of solid layer
c) Thickness of cake layer
d) Thickness of strip layer
Q.5
Mixing involves ____
a) Solid Liquid
b) Solid gas
c) Gas Liquid
d) Solid Liquid gas
Q.6
Mixing can be best accomplished by the ____
a) Rotation
b) Agitation
c) Settling
d) Shaking
Q.7
Impellors are divided into ______
a) Initial and Final
b) Tangential and Torsional
c) Centrifuge and Torque
d) Axial and Radial
Q.8
______ is defined as the ratio of void containing wetting fluid and voids of both fluid.
a) Residual saturation
b) Effective saturation
c) Special saturation
d) Saturation
Q.9
Calculate Se, if the wetting fluid void is 2.5 m3 and the void containing both fluids is 8.5 m3?
a) 4.56
b) 1.02
c) 0.75
d) 0.294
Q.10
In a super centrifuge, if the radius of the basket is reducedthen ____
a) RPM is halved
b) RPM is doubled
c) RPM is tripled
d) No change in RPM
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