Mining Engineering
2017 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE MN 2017 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 16–18 of 65. Imported answers require review unless explicitly marked reviewed.
Question 16
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The magnetic bearing of a line is 65°30′. If the declination is 4°30′ W, the true bearing of the line in degrees is ________
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A vertical photograph of a 40 m high hill is taken from 4.4 km height. If the focal length of the camera is 15 cm, the scale of the photograph is ________
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The operating conditions of a rotary rock drill are: applied thrust: 6.75 kN, revolution: 180 rpm, and penetration rate: 0.15 m/min. The work done per revolution in N-m is ________
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