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Temperature Ranges and Drying Processes Quiz
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Temperature Ranges and Drying Processes Quiz

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Questions and Answers

What is the optimum range of temperature in a cold storage for fruits and vegetables?

  • -1.1°C to 10°C
  • 0°C to 100°C
  • 5°C to 100°C (correct)
  • 0°C to 120°C
  • Which type of dryer involves the product being dried moving in the same direction as the drying air?

  • Cross-flow type dryer
  • Concurrent-flow type dryer (correct)
  • All of the choices
  • Counter-flow type dryer
  • What is defined as the rate of the total heat utilized to vaporize moisture in the material being dried compared to the heat added to the drying air?

  • Thermal efficiency
  • All of the choices
  • Heat of vaporization efficiency (correct)
  • Dryer efficiency
  • Which term refers to the amount of moisture in grain expressed as a percentage of weight of dry matter?

    <p>Moisture content dry basis</p> Signup and view all the answers

    What is the heat loss per square foot of the 9-inch-thick wall of a brick kiln with outside and inside temperatures of 1500°F and 400°F, respectively?

    <p>246 BTU/hr-ft^2</p> Signup and view all the answers

    In a solar dryer, if four tons of paddy with 25% initial moisture content is dried to 15% moisture content, what is the amount of moisture removed?

    <p>471 kg</p> Signup and view all the answers

    In a two-ton mechanical dryer, paddy is dried from 24% to 14%. What is the final weight of the product after drying?

    <p>1,767.4 kg</p> Signup and view all the answers

    What is the drying capacity in kilograms per hour for a two-ton mechanical dryer that can dry paddy from 24% to 14% moisture content in 8 hours?

    <p>200 kg/hr</p> Signup and view all the answers

    What is the correct definition of the term 'field capacity' in soil science?

    <p>Moisture content after gravitational water has been removed</p> Signup and view all the answers

    In soil science, what is 'apparent specific gravity' defined as?

    <p>Apparent specific gravity</p> Signup and view all the answers

    What type of drainage system is characterized by laterals meeting the main line at only one side?

    <p>Herringbone</p> Signup and view all the answers

    According to the International Soil Science Society, which range correctly describes a soil particle classified as sand based on its diameter?

    <p>0.02 to 2 mm</p> Signup and view all the answers

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