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- Question
Characteristic equation is the denominator of __________ loop transfer function.
Options- A. open
- B. closed
- C. both (a)and (b)
- D. neither (a) nor (b)
- Correct Answer
- closed
- 1. Which of the following low molecular weight (<104 ), soft & waxy polymer is used in chewing gum?
Options- A. Cellulose acetate
- B. Polyvinyl acetate
- C. Thiokol
- D. PVC Discuss
- 2. In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer?
Options- A. Bakelite (phenol formaldehyde)
- B. Polyester
- C. Polythene
- D. Nylon-6 Discuss
- 3. Which of the following polymers belong to the class of formaldehyde resin?
Options- A. Melamine resins
- B. Teflon
- C. Dacron
- D. None of these Discuss
- 4. Which of the following is a copolymer?
Options- A. PVC
- B. Bakelite
- C. Polythene
- D. Teflon Discuss
- 5. What is the normal range of exit cone angle of a venturimeter?
Options- A. 2 to 5
- B. 7 to 15
- C. 15 to 25
- D. >25 Discuss
- 6. Which of the following denotes the effect of compressibility in fluid flow?
Options- A. Weber number
- B. Mach number
- C. Euler number
- D. Reynolds number Discuss
- 7. Which of the following is not a dimension-less parameter?
Options- A. Euler number
- B. Specific gravity
- C. Fanning friction factor
- D. None of these Discuss
- 8. Which of the following is not concerned with the fluid-particle interaction?
Options- A. Drag co-efficient
- B. Froude number
- C. Galileo number
- D. Weber number Discuss
- 9. Which of the following is not categorised as a "mechanical operation"?
Options- A. Agitation
- B. Filtration
- C. Size enlargement
- D. Humidification Discuss
- 10. Which of the following is the most suitable for cleaning of fine coal dust (<0.5 mm)?
Options- A. Trough washer
- B. Baum jig washer
- C. Spiral separator
- D. Froth floatation Discuss
More questions
Correct Answer: Polyvinyl acetate
Correct Answer: Bakelite (phenol formaldehyde)
Correct Answer: Melamine resins
Correct Answer: Bakelite
Correct Answer: 7 to 15
Correct Answer: Mach number
Correct Answer: None of these
Correct Answer: Weber number
Correct Answer: Humidification
Correct Answer: Froth floatation
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