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GATE 2025 MN – Question 42

Mining Methods and Machinery · Mining Methods · 2 marks · Multiple select

Which statements about draglines are correct?

  1. The initial cut is called the key cut.
  2. Tandem operation needs at least two draglines.
  3. A dragline normally excavates above its working bench.
  4. A dragline can move using walking pads.

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Show answer and explanation

Correct answer: (A) The initial cut is called the key cut.; (B) Tandem operation needs at least two draglines.; (D) A dragline can move using walking pads.

Explanation

A identifies the opening/key cut; B states the multiple-machine nature of tandem operation; D describes walking-dragline mobility. Draglines typically excavate below their standing level, so C reverses the usual operating geometry. Select A,B,D.

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