Tunnel Engineering

Pick up the mechanical ventilation method used for tunnels from the following:

  • A. Blowing fresh air by ducts to the face of tunnel
  • B. Exhausting foul air by ducts from the face of the tunnel and permitting fresh air through the tunnel
  • C. Blowing fresh air and exhausting foul air by ducts
  • D. All the above
Answer: Option D.

No answer description available for this question.

Leave a Reply

Your email address will not be published.

Back to top button
error: Alert: Content is protected !!