Chemical Engineering Concepts Multiple Choice Test - Set 14 - ObjectiveBooks

Chemical Engineering Concepts Multiple Choice Test - Set 14

Practice Test: Question Set - 14

1. With increase in compression ratio, the volumetric efficiency of air compressor
    (A) Increases
    (B) Decreases
    (C) Remain same
    (D) May increase or decrease (depends on the suction pressure)

2. Damage to metal surface by mechanical action is called
    (A) Pitting
    (B) Corrosion
    (C) Erosion
    (D) None of these

3. Which of the following has the least value of ultimate tensile strength (UTS)?
    (A) Medium carbon steel
    (B) High carbon steel
    (C) Cast iron
    (D) Wrought iron

4. Stresses encountered in the metal forming processes are less than the __________ of the material.
    (A) Fracture strength
    (B) Yield strength
    (C) Elastic limit
    (D) Limit of proportionality

5. Current employed in resistance welding ranges from __________ kVA/cm2.
    (A) 1.2 to 2.5
    (B) 4.5 to 6.2
    (C) 7.5 to 8.5
    (D) 10.5 to 15.5

6. _________ of air does not increase with increase in temperature.
    (A) Density
    (B) Thermal diffusivity
    (C) Viscosity
    (D) Thermal conductivity

7. Presence of nickel & chromium in steel does not raise its
    (A) Elastic limit
    (B) Machining properties
    (C) Ductility
    (D) Resilience

8. _________ property of steel increases by addition of large amount of silicon in it.
    (A) Mechanical
    (B) Machining
    (C) Magnetic
    (D) Refractory

9. Materials having _________ lattice structure are usually the most ductile.
    (A) Body centered cubic (bcc)
    (B) Hexagonal close packed (hcp)
    (C) Face centered cubic (fcc)
    (D) None of these

10. Material of construction of foundry crucible is
    (A) Lead
    (B) Stainless steel
    (C) Graphite
    (D) Cast iron

11. When the wavelength of incident X-rays increases, the angle of diffraction
    (A) Decreases
    (B) Increases
    (C) Remain constant
    (D) Shows no systematic variation

12. _________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.
    (A) Tensile
    (B) Fatigue
    (C) Impact
    (D) None of these

13. The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively
    (A) 7 and 30
    (B) 10 and 50
    (C) 2 and 50
    (D) 13 and 55

14. Liquid nitrogen containers can be made from
    (A) Ferritic stainless steel
    (B) HSLA steel
    (C) Titanium
    (D) Austenitic stainless steel

15. Bad odour in sanitary latrines is reduced by periodically sprinkling
    (A) Bleaching powder
    (B) Lime powder
    (C) Aluminium sulphate
    (D) None of these

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