Basic Chemical Engineering Concepts Questions - Set 16 - ObjectiveBooks

Basic Chemical Engineering Concepts Questions - Set 16

Practice Test: Question Set - 16

1. _________ circuit is most commonly used to measure strain with the help of a strain gauge.
    (A) Ballast
    (B) Voltage balancing potentiometric
    (C) Simple current sensitive
    (D) None of these

2. Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is
    (A) 3
    (B) 5
    (C) 0.5
    (D) 1.5

3. Basic open hearth furnace (BOF) is not used for producing _________ steel.
    (A) Killed
    (B) Rimming
    (C) High alloy
    (D) None of these

4. The ratio of the shear stress to the principal stress on a principal plane is
    (A) 0
    (B) 1
    (C) 1/2
    (D) 1/3

5. Laser is a device to produce
    (A) Gamma rays
    (B) Microwaves
    (C) A beam of white light
    (D) A beam of coherent light

6. Which of the following is a commonly used manometric liquid for low pressure range?
    (A) Ethyl alcohol
    (B) Carbon tetrachloride
    (C) Glycerol
    (D) Ethylene glycol

7. Which of the following is the most wear resistant grade of carbide used for the cutting tools?
    (A) Aluminium carbide
    (B) Tungsten carbide
    (C) Nickel carbide
    (D) Iron carbide

8. _________ has a negative co-efficient of linear expansion.
    (A) Iron
    (B) Copper
    (C) Rubber
    (D) Nickel

9. Thermal efficiency of an internal combustion engine is around _________ percent.
    (A) 8
    (B) 35
    (C) 65
    (D) 80

10. Maximum permissible sulphur content in steel is __________ percent.
    (A) 0.015
    (B) 0.055
    (C) 0.505
    (D) 0.805

11. Hydrogen in liquid steels is dissolved
    (A) As tiny gas bubbles
    (B) In the atomic form
    (C) In the ionic form
    (D) In the molecular form

12. A spring material should have low
    (A) Elastic limit
    (B) Deflection value
    (C) Fatigue resistance
    (D) None of these

13. Nickel and __________ are the alloying element added in steel to increase its toughness.
    (A) Molybdenum
    (B) Chromium
    (C) Vanadium
    (D) Silicon

14. A common disinfectant used in village wells for disinfection of water is
    (A) Free chlorine
    (B) Bromine
    (C) Iodine
    (D) Potassium permanganate

15. The lightest non-inflammable gas is
    (A) H2
    (B) He
    (C) Ar
    (D) O2

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