DE-8 DAIRY ENGINEERING


1. 
Which is the sanitary feature that involves the design of equipment for proper inspection






2. 
The AISI 304 stainless steel is NOT a






3. 
Mild steel has carbon% in the range







4. 
Material amongst the following that is used for Milk pump shaft seal is






5. 
Element that is not present in AISI 304 but present in AISI 316 Stainless steel is






6. 
Mirror polish of the surface of pipeline is usually done at






7. 
The milk carrying capacity of pipe line of 25mm O.D. is (in Kg/h)






8. 
To keep the gaskets in place on a PHE plate, the method used can be






9. 
Gaskets should not be exposed to






10. 
In HTST pasteurizer ,the type of hot water temperature control






11. 
The first step for installation of pipe lines in a dairy plant is






12. 
The disadvantage of under sizing of pipe lines is






13. 
The pipe connections that are free of gaskets are






14. 
Vibrations in supports are avoided by






15. 
Stainless steel pipe is designated by






16. 
The tanks that do not need insulation are






17. 
The inner edges of milk storage tanks should have knuckle radius at least






18. 
The storage tanks are usually over capacity than the nominal capacity of the tank by






19. 
Thickness of insulation of milk storage tank should be such that the gain in temperature. Under standard conditions should be less than






20. 
The slope towards outlet of a milk storage tank should be atleast






21. 
For a very small chilling centers, the cleaning and sterilization of cans can be economically done by






22. 
In a straight through can washer, the fresh water can be preheated in






23. 
The cleaning fluid that is not used in can washing operation is






24. 
The can movement in the straight through can washer is






25. 
Water jet pressure is in the range of






26. 
The last stage in Soaker type bottle washer is






27. 
Hot detergent solution will be at a temperature of (in ºC)






28. 
The total washing time in Soaker type bottle washer is about (in min)






29. 
Jetting action in Soaker type bottle washer causes






30. 
The condition of jets can be inspected by






31. 
Cleaning In Place will be difficult if the water used has hardness more than






32. 
For cold milk holding equipment, the solution that is not used is






33. When using nitric acid , to protect gaskets the temperature should not exceed (in ?C)





34. 
In modern automatic CIP systems, the temperatures of cleaning solutions is maintained






35. 
To avoid human intervention in automatic CIP systems, the valves used are of






36. 
Example of Gas-Solids separation operation is






37. 
Example of Liquid-solid separations are






38. 
Municipal water and waste treatment plans employ mostly






39. 
The Tilted-Plate clarifiers have the plates inclined at






40. 
The process of passing a fluid containing suspended particles through a porous medium is called






41. 
Microfiltration is the process of filtration that involves filtering very fine particles less than






42. 
Which is the type of filtration most common in dairy industry






43. The common design of plate-and frame press has the filter plates arranged






44. 
The vertical plate filter though simple in construction has the disadvantage of






45. Constant pressure process of filtration is valid for only





46.
When the gravity settling of particle in a fluid, the forces acting on it are






47. The path most likely to be taken up by the heavier liquid between two plates is






48. 
The value of constant ‘C’ included in the equation of capacity of cream separator is in the range






49. The position of neutral zone for clarification is towards





50. 
Example of separation of Gas from liquid is






51. 
Entry of air into the milk is restricted in Open type cream separator by






52. 
Hermetic cream separators the part that has Left hand screw thread






53. 
For standardization by Tri-process machine






54. 
Type of gear mechanism in drive for Hermetic cream separator is






55. 
Shape of bowl for a self desludging cream separator is






56. 
The movement of the bottom bowl is achieved due to






57. The ejection of sludge by cream separators is controlled for frequency as well as






58. 
Most common reason for Lubrication oil in the cream separator to show white color is






59. 
Cream separator should not be run






60. Homogenization of milk is done to reduce fat globules to size below (in ?m)





61. 
By having 3 piston pumps, the advantage is






62. In modern homogenizer, the adjustment of pressure is done





63. 
The operative pressures in I st stage of homogenization is






64. Water is required in medium sized homogenizer for





65. Homogenization of milk is done to reduce fat globules to size below (in ?m)





66. 
Regrinding of homogenizer valves when worn out is done by






67. 
Safety valve s must be tested with






68. 
In a homogenizer Condensate is drain off time to time from






69. 
If the vibrations in the pressure homogenizer gauge is excessive






70. 
If one single belt is completely worn out in a set of belt






71. 
Turbulance in the flow of milk in between plates is mainly achieved by






72. 
Leakage of one fluid into the other due to failure of gasket is prevented by presence of






73. 
The flow rate of milk to hot water ratio is usually






74. 
Component that limits the temperature of application in a HTST pasteurizer is






75. 
Flow Diversion Valve is position in HTST pasteurizer after






76.





77. 
Flow diversion valve is powered by






78. 
The most common temperature sensor of hot milk in HTST pasteurizer is






79. Temperature controller output is value





80. 
Value of Temperature controller output is






81. 
In HTST pasteurizer, milk after FCBT and pump, passes through






82. While heat transfer plates are being tightened after maintenance work, they should





83. 
Before new gaskets are fixed, first thing you should do is






84. 
The temperature difference between hot water and milk should not exceed (in ºC)






85. 
The best parameter to judge the performance of HTST pasteurizer is






86. 
The component that gets damaged due to higher operating temperature than required is






87. Typical time-temperature combinations for in-container sterilization process are





88. 
Time temperature combination of for UHT processing is






89. Role of Air supply in Batch Sterilization equipment is






90. Cans are rotated during sterilization so that





91. For a Hydrostatic sterilizer, the height of water column needed for a 121 C sterilization temperature is





92. 
The highest internal pressure for heat exchanger for UHT processing will be






93. 
In indirect UHT plant, the cold water cooling circuit in cleaning return line is required for






94. 
The fouling of heat exchange surface is reduced in the Indirect UHT plant because of






95. 
Tubular heat exchanger ability to withstand high pressure facilitates






96. 
The outer cylindrical housing for the multi tube assembly in tubular heat exchanger is






97. 
Correct sequence of operation in Indirect heating system for UHT processing is






98. 
Radial drills in the steam injectors is to encourage






99. 
Homogenization after sterilization stage causes






100. 
During sterilization and cleaning in injection system






101. 
The component that is different in Infusion system, as compared to Injection system is






102. 
The overall spoilage level acceptable after incubation of filled containers attainable in commercial practice is






103. 
Temperature needed for dry heat as sterilization medium , time is not to be very long is






104. 
Hydrogen Peroxide is used as a sterilization medium for the cartons at a concentration of






105. 
The role of Aluminum foil in the carton is






106. 
The high temperature of heat sealing of carton in addition to sealing, also generates






107.





108. 
Recent advances in packaging materials is






109. 
Role of star wheel in packing machine is






110. 
Latest in the control system for packaging machines is






111. 
In the centre of the feed nipple for bottle filling will be






112. 
Vacuum line ensures






113. 
In the Pouch filling machine of FFS type, the cyclic operation correct sequence is






114. 
Role of forming plates is to






115. 
The difference in manual and automatic operation in FFS is






116. 
Cooling cycle in the automatic operation of FFS is the period when






117. 
Sterilization of the film is done by






118. 
The crucial requirement in the bulk filling and packing of food products is






119. 
Bulk filling equipment is located






120. 
The correct sequence of operation of bulk filing is






121. 
The packaging container has to be






122. 
All product contact surfaces in the filling equipment should be of






123. 
Random distribution, into and through one another or two or more initially separate phases is called






124. 
Baffles are provided mainly to






125. 
When direction and velocity of flow to the suction of impeller is to be controlled






126. 
Bottom impeller, either of Turbine or Propeller type is mounted above the bottom of tank by about






127. 
Example of dispersing gas through the liquid is






128. 
Volume circulated by impeller must be sufficient to






129. 
Dimensionless number that is important parameter for Volumetric flow rate is






130. 
Volumetric flow rate is proportional to






131. 
For a standard flat blade turbine, the Flow number is approximately






132. 
Power requirement per unit volume of fluid can be estimated by product of flow and kinetic energy when the flow is






133. 
The Power number NP is analogous to






134. 
Why a tank should be baffled , even though power requirement is more for agitation






135. 
When will the baffles not useful for agitation of liquid in a tank






136. 
How are the Plots of NP Versus NRe useful for the design of agitators?






137. 
Shape factors are






138. The part of the sterilizer that needs lubrication





139. Gasket for the Batch sterilizer is made of





140. Standby Generator is essential for





141. Gaskets for the UHT plant are mostly of





142. UHT plant operation has to be stopped if the internal pressure exceeds