Chemical Engineering - Chemical Engineering Basics

21. 

Gas turbine normally employs a constant __________ cycle.

A. pressure
B. temperature
C. volume
D. none of these

Answer: Option A

Explanation:

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22. 

Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio) ?

A. E = 2G (1 + v)
B. E = G (1 + v)
C. E = G (1 + v)/2
D. E = 2G (1 + 2v)

Answer: Option A

Explanation:

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23. 

Electrostatic separation of minerals from each other is based on their differences in the following property.

A. Densities.
B. Magnetic permeabilities.
C. Electrical conductivities.
D. Hardness.

Answer: Option C

Explanation:

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24. 

Natural water contains approximately __________ percent of heavy water.

A. 0.015
B. 0.71
C. 1.2
D. 3.5

Answer: Option A

Explanation:

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25. 

The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air.

A. ambient
B. dry bulb
C. dew point
D. wet bulb

Answer: Option C

Explanation:

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