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GATE 2021 MN – Question 14

Mining Methods and Machinery · Mining Machinery · 1 mark · Multiple choice

Which component does a surface miner NOT have?

  1. Differential gear for turning
  2. Crawler-tensioning arrangement
  3. Scraper plate behind the drum
  4. Pick-cooling system

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Show answer and explanation

Correct answer: (A) Differential gear for turning

Explanation

Crawler tracks can be driven independently to steer a surface miner, so a conventional differential gear is not required, A. Crawler tensioning, material collection/scraping behind the cutting drum and pick cooling are associated with its operating systems.

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