Download GTU BE/B.Tech 2018 Winter 6th Sem New 2162207 Mine Ventilation Question Paper

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Subject Code: 2162207

GUJARAT TECHNOLOGICAL UNIVERSITY

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Instructions:

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1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

1. 1. Explain the Toxicity of Gases in Mines. (03)
   2. Differentiate the axial screw fan and centrifugal fan. (04)

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   3. Explain mine atmospheres and its composition. (07)
2. 1. Write the application of Centrifugal Fan. (03)
   2. Define the terms: (1) Doors (2) Regulator. (04)
   3. Explain Natural ventilation with neat sketch. (07)

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   OR

   1. Describe Chezy’s and Atkinson’s equations. (07)
   2. Write a short note on Pitot Tube. (03)
   3. Describe Multi Gas Detector in brief. (04)

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3. 1. Write a note on Air locking in underground mines. (07)
   2. Write the application of Exhaust fan. (03)
   3. Write a note on Coward’s Diagram. (04)

   OR

   1. Explain Hopcalite detector and Hoolamite tube. (07)

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   2. Write note on Metabolism and Respiration process of human beings. (03)
   3. Describe Automatic Firedamp Detector. (04)
4. 1. Explain Ascentional and Descentional Ventilation in detail. (07)
   2. Define Homotropal and Antitropal Ventilation. (03)

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   3. Describe Wheat Stone Bridge principle with neat sketch. (04)

   OR

   1. Explain kata thermometer in brief with neat and clean sketch. (07)
   2. Write the physiological effect of Carbon Monoxide (CO). (03)
   3. Describe air conditioning in mines. (04)

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5. 1. Describe characteristics, properties and their physiological effect of Methane (CH4). (07)
   2. Write the physiological effect of CH4. (03)
   3. Describe characteristics, properties of Carbon Monoxide (CO). (04)

   OR

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   1. Define relative humidity. Explain hygrometer with neat and clean sketch. (07)

Date: 04/12/2018
Total Marks: 70

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