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.Management Sciences
Category: Chemical Engineering Basics
Maximum permissible air velocity in pipelines is about ______________ metre/second ?
0
A. 5
B. 10
C. 20
D. 40
Which of the following phenomenon/ phenomena is/are diffusion controlled ?
A. Dislocation climb
B. Cross-slip
C. Twinning
D. Recrystallisation
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)
Mho’s scale of hardness, which consists of 10 standard minerals is used for the measurement of _______________ hardness?
A. Scratch
B. Indentation
C. Dynamic
D. Rebound
Out of the following the refractive index is the highest for____________________?
A. Glass
B. Diamond
C. Brine
D. Kerosene
In practice, the compression ratio of compression-ignition (CI) engine ranges from ______________________?
A. 15 to 25
B. 5 to 10
C. 40 to 55
D. 60 to 70
Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in ______________ position ?
A. Horizontal
B. Vertical
C. Inclined
D. Any
Function of gear box is to____________________?
A. Reduce the speed
B. Obtain variable speed
C. Increase the speed
D. Produce high torque
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