Discussion
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- Question
The collection efficiency by interception increases with the
Options- A. increasing particle diameter
- B. increasing air flow velocity
- C. both (a) and (b)
- D. increasing particle size
- Correct Answer
- increasing particle size
- 1. The radius of the filter with a depth of 14 cm required for a volumetric airflow rate of 10 m3/min is approximately
Options- A. 1.6 m
- B. 0.6 m
- C. 3
- D. 6 m Discuss
- 2. The specific death rate of an organism can be expressed as
Options- A. ln 2/D
- B. D/ln2
- C. D.ln2
- D. 2.0.3/ln2 Discuss
- 3. The relationship between the del factor, temperature and time is given as
Options- A. ? = A.t. e-E/RT
- B. ? = 1/(A.t. e-E/RT)
- C. ? = A.t. eE/RT
- D. ? = A.t.T Discuss
- 4. Which of the following impellers are used for wide range of viscosities?
Options- A. paddles
- B. turbines
- C. propellers
- D. none of these Discuss
- 5. The volume of liquid (VL) in a cylindrical reactor can be calculated from the liquid height (HL) and tank diameter (Dt) using the following equation
Options- A. VL = 4/3 x ? x HL x Dt3/8
- B. VL= HL x ? x Dt2/4
- C. VL= HL x ? x Dt2
- D. VL = 4 x ? x Dt2 Discuss
- 6. The heated medium passes through a holding section, which is usually maintained in
Options- A. adiabatic conditions
- B. isothermal conditions
- C. isotropic conditions
- D. isobaric conditions Discuss
- 7. The collection efficiency by the inertial impaction mechanism is the function of
Options- A. Stokes and Reynolds number
- B. Stokes and Schmidt number
- C. Grashoff and Reynolds number
- D. Stokes and Grashof number Discuss
- 8. The moist heat is more effective than the dry heat because the intrinsic heat resistance of vegetative cells is greatly
Options- A. increased in a dry state
- B. decreased in a dry state
- C. increased in a wet state
- D. decreased in a wet state Discuss
- 9. The value of K
Options- A. increases with increase in air velocity
- B. decreases with increase in air velocity
- C. increases to an optimum with increase in air velocity and decreases on further increase of air velocity
- D. none of these Discuss
- 10. The collection efficiency by impaction increases with
Options- A. increasing particle diameter
- B. increasing air flow velocity
- C. both (a) and (b)
- D. increasing particle size Discuss
Sterilization problems
Search Results
Correct Answer: 0.6 m
Correct Answer: ln 2/D
Correct Answer: ? = A.t. e-E/RT
Correct Answer: turbines
Correct Answer: VL= HL x ? x Dt2/4
Correct Answer: adiabatic conditions
Correct Answer: Stokes and Reynolds number
Correct Answer: increased in a dry state
Correct Answer: increases to an optimum with increase in air velocity and decreases on further increase of air velocity
Correct Answer: both (a) and (b)
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