Mining Engineering · all questions

Introduction to Mining Engineering
practice.

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403

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Q221

Which types of cables are used in portable & transportable apparatus?

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Q222

Which of the below- mentioned coal subsidiary of Coal India Limited has no underground mine?

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Q223

No winding rope, which has been in use for more than "A" years, shall be used for winding purpose. A is given by

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Q224

For hydraulic transportation of solids in pipelines, the ratio of the size of solids to the pipe diameter should not be more than

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Q225

Long wall mining method is best suitable for

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Q226

Based on the manpower, what should be the quantity of air supposed to flow through the in bye most galleries?

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Q227

The current average OMS in Indian underground coal mine with SB technology having SDL/LHD is

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Q228

The process of underwater mining of sand, clay, tin and placer deposits of gold is known as

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Q229

In sublevel stoping operation the draw system is generally

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Q230

The full form of 'SSR' is

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Q231

Equipment used in mining of placer deposits is

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Q232

For the purpose of adequate ventilation, in every ventilating district not less than A cu.m per minute of air per daily tonne output is required to pass along the last ventilation connection. A is given by

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Q233

The range of application of hydraulicking is mostly limited to

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Q234

What should be the minimum pressure to be maintained at the nozzle in hydraulic mining operation?

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Q235

The ratio of current assets to current liability is known as

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Q236

Permissible limit of respirable concentration of coal dust should not be more than

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Q237

The effective position of box cut for a deposit, where ratio of OB : Ore is least should be

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Q238

What should be the minimum insulation resistance of medium power cable?

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Q239

Roof fall accidents can be minimized by

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Q240

Where the telephones or electrical signals are provided, the signal wires shall be supported on insulators and shall not be energized at more than

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