MCQOPTIONS
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MCQOPTIONS
This section includes 270 Mcqs, each offering curated multiple-choice questions to sharpen your Dairy Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Device used to improve thermal efficiency of an evaporator is called? |
| A. | Thermo compressor |
| B. | Deareater |
| C. | Dryer |
| D. | Pasteurizer |
| Answer» B. Deareater | |
| 52. |
To prevent the product flow in the wrong direction which of the following valve is used? |
| A. | Seat valve |
| B. | Butterfly valve |
| C. | Seat valve and butterfly valve |
| D. | Check valve |
| Answer» E. | |
| 53. |
When considering sire selection, what does repeatability measure? |
| A. | accuracy of sire’s Predicted Difference(P.D.) |
| B. | efficiency |
| C. | totality |
| D. | result |
| Answer» B. efficiency | |
| 54. |
A decanter centrifuge is a machine for continuous sedimentation of suspended solids from a liquid by the action of ________in an elongated, horizontal rotating bowl. |
| A. | Centrifugal force |
| B. | Gravitation force |
| C. | Friction force |
| D. | Force of resistance |
| Answer» B. Gravitation force | |
| 55. |
Solubility of gases decrease with ________ in solution temperature. |
| A. | Increase |
| B. | Decrease |
| C. | No change |
| D. | Increase and decrease |
| Answer» B. Decrease | |
| 56. |
Which of the following mechanisms is not used by a membrane filter to remove particulate material from the water? |
| A. | flux |
| B. | reverse flow |
| C. | particle counts |
| D. | chlorine |
| Answer» C. particle counts | |
| 57. |
Homogenization has which of the following effects on the physiology of nutrition of milk? |
| A. | Improved digestibility |
| B. | Reduced digestibility |
| C. | Cholesterol |
| D. | Sugar |
| Answer» B. Reduced digestibility | |
| 58. |
Lack of homogenization leads to which of the following developments? |
| A. | Cream layer development |
| B. | Protein development |
| C. | Astringency development |
| D. | Increased fat content |
| Answer» B. Protein development | |
| 59. |
Aeration leads to ______ in volumetric measurement of milk. |
| A. | Precision |
| B. | Delay |
| C. | Consistency |
| D. | Inaccuracy |
| Answer» E. | |
| 60. |
The bacterial counts of milk will _______ after homogenization. |
| A. | Increase |
| B. | Decrease |
| C. | Remain same |
| D. | First increase then decrease |
| Answer» B. Decrease | |
| 61. |
Which of the following packaging material should be used in order to avoid off flavor formation in homogenized milk? |
| A. | Transparent Glass bottles |
| B. | Transparent bags |
| C. | Opaque containers |
| D. | Transparent containers |
| Answer» D. Transparent containers | |
| 62. |
Evaporation in dairy industry is done under __________ |
| A. | Vacuum |
| B. | Heater |
| C. | Dryer |
| D. | Pasteurizer |
| Answer» B. Heater | |
| 63. |
Ripening tanks of butter cream come under which of the following categories? |
| A. | Process tank |
| B. | Mixing tank |
| C. | Balance tank |
| D. | Storage tank |
| Answer» B. Mixing tank | |
| 64. |
Statement related to the process of evaporation that is incorrect is? |
| A. | Evaporation occurs at any temperature |
| B. | Evaporation takes place within liquid |
| C. | Temperature may change during evaporation |
| D. | No bubbles are formed in liquid during evaporation |
| Answer» C. Temperature may change during evaporation | |
| 65. |
When posing a dairy cow, why are the back legs set up so the one nearest the judge is one half steps forward? |
| A. | rear and fore udder attachment |
| B. | torso |
| C. | calf |
| D. | limbs |
| Answer» B. torso | |
| 66. |
What is the volume reduction achieved by concentration, i.e. the ratio of the initial volume of feed to the final volume of concentrate called? |
| A. | Permeate |
| B. | Retentate |
| C. | Concentration factor |
| D. | Diafilteration |
| Answer» D. Diafilteration | |
| 67. |
Which direction should the cow be led in the ring? |
| A. | clockwise |
| B. | anticlockwise |
| C. | parallel |
| D. | horizontal |
| Answer» B. anticlockwise | |
| 68. |
The evaporator in which the material to be evaporated boils outside the horizontal tube and steam condenses inside the tubes is called ________ |
| A. | Horizontal tube evaporator |
| B. | Vertical tube evaporator |
| C. | Vacuum pan evaporator |
| D. | Forced circulation evaporator |
| Answer» B. Vertical tube evaporator | |
| 69. |
Main category of silos is? |
| A. | Storage tank |
| B. | Process tank |
| C. | Storage and process |
| D. | Steel tank |
| Answer» D. Steel tank | |
| 70. |
An IBR-PI, pneumonia vaccination should first be given to a calf at what month of age? |
| A. | 3months |
| B. | 4 months |
| C. | A year |
| D. | 8 months |
| Answer» C. A year | |
| 71. |
Disintegration of fat globules in homogenization is achieved by which of the following? |
| A. | Turbulence |
| B. | Cavitation |
| C. | Turbulence and cavitations |
| D. | Pasteurization |
| Answer» D. Pasteurization | |
| 72. |
Two-stage method is usually chosen to achieve optimal homogenization efficiency. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 73. |
What is the aim of pipes system in the dairy industry? |
| A. | Facilitate product flow |
| B. | Pasteurization |
| C. | Fouling |
| D. | Storage |
| Answer» B. Pasteurization | |
| 74. |
Evaporation occurs only _____ |
| A. | after boiling |
| B. | after extreme cooling |
| C. | at surface of a liquid |
| D. | if boiling occurs at atmospheric pressure |
| Answer» D. if boiling occurs at atmospheric pressure | |
| 75. |
What are two important sire selection tools? |
| A. | Predicted Difference and repeatability |
| B. | Predicted life |
| C. | Predicted death |
| D. | Predicted age |
| Answer» B. Predicted life | |
| 76. |
Which evaporators can be used when a low degree of concentration is required? |
| A. | Falling film evaporator |
| B. | Circular type evaporator |
| C. | Tubular type evaporator |
| D. | Plate type evaporator |
| Answer» C. Tubular type evaporator | |
| 77. |
Main application of centrifugal pump is in which of the following? |
| A. | Low viscosity products |
| B. | Heavily aerated liquids |
| C. | Gentle treatment with high viscosity |
| D. | Water treatment |
| Answer» B. Heavily aerated liquids | |
| 78. |
The minimum size of silo used in dairy is? |
| A. | 150000 litres |
| B. | 100000 litres |
| C. | 10000 litres |
| D. | 100 litres |
| Answer» B. 100000 litres | |
| 79. |
What is the flux of a membrane filter if it contains 75 sq. ft. of filter area and operates for 24 hours at a flow rate of 5 gpm? Assume that the water temperature is 20℃. |
| A. | 100 gallons per square foot per day |
| B. | 98 gallons per square foot per day |
| C. | 76 gallons per square foot per day |
| D. | 59 gallons per square foot per day |
| Answer» C. 76 gallons per square foot per day | |
| 80. |
Single effect evaporation is simple and steam effective. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 81. |
Aeration in milk doesn’t occur in which of the following states? |
| A. | Dispersed state |
| B. | Dissolved state |
| C. | Chemically bound state |
| D. | Crystal state |
| Answer» E. | |
| 82. |
Which of the following are three common breeds of dairy cows in the United States?I. HolsteinII. GuernseyIII. Jersey |
| A. | I only |
| B. | II only |
| C. | III only |
| D. | I, II, III |
| Answer» E. | |
| 83. |
Which pump is more suitable for an application where very high pressure is required to be developed at moderate discharge? |
| A. | Reciprocating pump |
| B. | Centrifugal pump |
| C. | Turbine |
| D. | None of the mentioned |
| Answer» B. Centrifugal pump | |
| 84. |
Which of the following valves is used to maintain pressure in the system? |
| A. | Pressure relief valve |
| B. | Check valve |
| C. | Manual control valve with variable flow plug |
| D. | Pneumatic control valve with variable-flow plug |
| Answer» B. Check valve | |
| 85. |
The lack of which vitamin causes rickets? |
| A. | vitamin A |
| B. | Vitamin E |
| C. | Vitamin D |
| D. | Vitamin K |
| Answer» D. Vitamin K | |
| 86. |
Homogenized milk show sensitivity to which enzyme? |
| A. | Lipases |
| B. | Tryptases |
| C. | Pepsin |
| D. | Oxyin |
| Answer» E. | |
| 87. |
Which of the following is NOT a type of positive displacement pumps? |
| A. | Reciprocating pump |
| B. | Rotary displacement pump |
| C. | Centrifugal pump |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 88. |
Which formula is used to calculate head loss in valves? |
| A. | K² (v/2 g) |
| B. | K (v/2 g) |
| C. | K (v²/2 g) |
| D. | K³ (v²/2 g) |
| Answer» D. K³ (v²/2 g) | |
| 89. |
Evaporators in which pumps are used to force the evaporating liquid through the tubes are called? |
| A. | Horizontal tube evaporator |
| B. | Vertical tube evaporator |
| C. | Vacuum pan evaporator |
| D. | Forced circulation evaporator |
| Answer» C. Vacuum pan evaporator | |
| 90. |
What are the reasons causing pressure drop in hydraulic systems?i. Long length of pipeii. Frictioniii. Type of fluidiv. Losses in valves and bends |
| A. | i and iv |
| B. | Only i |
| C. | ii and iii |
| D. | i, ii, iii and iv |
| Answer» E. | |
| 91. |
When showing cows, where should the hind foot nearest the judge be when the animal is posed? |
| A. | two steps back |
| B. | one half step forward |
| C. | three step back |
| D. | lying down |
| Answer» C. three step back | |
| 92. |
Crystallization, evaporation and distillation are a means of? |
| A. | separating soluble substances in solution |
| B. | separating insoluble substances in solutions |
| C. | separating filtrate from solution |
| D. | concentration |
| Answer» B. separating insoluble substances in solutions | |
| 93. |
Dispersed air in milk cause problems. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 94. |
What is the nutrient that eventually becomes part of muscle, bone and blood? |
| A. | protein |
| B. | carbohydrate |
| C. | mineral |
| D. | antibodies |
| Answer» B. carbohydrate | |
| 95. |
Tank used for mixing an ice cream formulation is? |
| A. | Process tank |
| B. | Mixing tank |
| C. | Balance tank |
| D. | Storage tank |
| Answer» C. Balance tank | |
| 96. |
Which of the following is not the advantage of falling film evaporator? |
| A. | Short residence time of liquid |
| B. | Good performance with small temperature difference across heating surfaces |
| C. | Operates at lower temperature difference than rising film evaporator |
| D. | Long residence time of liquid |
| Answer» E. | |
| 97. |
Homogenization temperature applied normally are ________ |
| A. | 30- 40℃ |
| B. | 50- 60℃ |
| C. | 60- 70℃ |
| D. | 90-100℃ |
| Answer» D. 90-100℃ | |
| 98. |
What are two ways to identify a calf?I. photos or color sketchesII. freeze bands, ear tagsIII. neck chain, ankle straps |
| A. | I only |
| B. | II only |
| C. | II and III |
| D. | I, II, III |
| Answer» E. | |
| 99. |
Storage of homogenized milk may lead to which of the following development? |
| A. | Sediment development |
| B. | Fat development |
| C. | Protein development |
| D. | Cream layer development |
| Answer» B. Fat development | |
| 100. |
Which of the following is/are not example/s of rotary displacement pumps? |
| A. | Gear pump |
| B. | Vane pump |
| C. | Rotary piston pump |
| D. | Centrifugal pump |
| Answer» E. | |