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- Question
The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be
Options- A. parabolic
- B. hyperbolic
- C. straight line
- D. none of these
- Correct Answer
- parabolic
- 1. Fog is an example of colloidal system of
Options- A. solid dispersed in gas.
- B. solid dispersed in liquid.
- C. liquid dispersed in gas.
- D. gas dispersed in liquid. Discuss
- 2. Friction factor for fluid flow in pipe does not depend upon the
Options- A. pipe length.
- B. pipe roughness.
- C. fluid density & viscosity.
- D. mass flow rate of fluid. Discuss
- 3. Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
Options- A. 10-3
- B. 103
- C. 10-15
- D. l015 Discuss
- 4. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
Options- A. hard
- B. soft
- C. silicon carbide
- D. aluminium oxide Discuss
- 5. Area under the stress-strain curve upto the __________ is referred to as the modulus of resilience.
Options- A. yield strength
- B. elastic limit
- C. proportional limit
- D. maximum point Discuss
- 6. The product out from a cupola is called
Options- A. wrought iron
- B. pig iron
- C. cast iron
- D. none of these Discuss
- 7. In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that
Options- A. compared to the mass flow rate of cooling water, the rate of condensation of steam is invariably smaller.
- B. maintaining vacuum on tube side is more difficult than that on the shell side.
- C. water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam.
- D. condenser can act as a storage unit for condensed steam. Discuss
- 8. Which one of the following is incombustible?
Options- A. H2
- B. CCl4
- C. C2H2
- D. S Discuss
- 9. __________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
Options- A. Beryllia
- B. Zirconia
- C. Alumina
- D. Magnesia Discuss
- 10. Machinability of hard alloys and tool steels is improved by
Options- A. spherodising
- B. annealing
- C. tempering
- D. normalising Discuss
Chemical Engineering Basics problems
Search Results
Correct Answer: liquid dispersed in gas.
Correct Answer: pipe length.
Correct Answer: 10-3
Correct Answer: aluminium oxide
Correct Answer: proportional limit
Correct Answer: cast iron
Correct Answer: water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam.
Correct Answer: CCl4
Correct Answer: Alumina
Correct Answer: annealing
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