GATE MN format:mcq PYQs & Answers — Page 19

Questions 181–190 of 348. Imported answers require independent review unless marked reviewed.

Topic practice 348 questionsPage 19 of 35

In an equilateral triangle PQR, side PQ is divided into four equal parts, side QR is divided into six equal parts and side PR is divided into eight equal parts. The length of each subdivided part in cm is an integer. The minimum area of the triangle PQR possible, in cm², is

Your answerChoose one option.

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Tricone roller bit is used with

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down-the-hole hammer.

Jack hammer.

rotary-percussive drill.

rotary drill.

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Reusing method of mining is practiced for

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thick vein deposit.

massive shallow deposit.

narrow vein deposit.

massive deep-seated deposit.

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The equipment used for both drop cut and terrace cut in surface mining is

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surface miner.

shovel.

dragline.

bucket wheel excavator.

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Surface miner does NOT have a

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differential gear for turning.

tensioning arrangement for crawler.

scraper plate behind the drum.

pick cooling system.

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Induced blasting enhances production in

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sublevel stoping.

block caving.

cut and fill mining.

shrinkage stoping.

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The measures of dispersion of a dataset are

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standard deviation, range and mode.

standard deviation, range and interquartile range.

variance, range and median.

interquartile range, median and mode.

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NONEL is used as down-the-hole initiator to

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avoid generation of air overpressure.

provide precise delay.

avoid deflagration of column charge.

reduce ground vibration.

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The vectors

and

act in a plane as shown below. The magnitude of the vector

Diagram for Mining Engineering question 8

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zero.

half to the area bounded by the vectors

and

equal to the area bounded by the vectors

and

twice the area bounded by the vectors

and

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As per MMDR Act 1957, for the allocation of lease of minor minerals

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the State Government is authorised to give the permit.

the Central Government is authorised to give the permit.

the State Government is authorised to give permit but with the consent of Central Government.

the Central Government is authorised to give permit but with the consent of State Government.

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GATE MN format:mcq PYQs

Question 10

Question 1

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Question 8

Question 9