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Mining Engineering · all questions

Drilling and Blasting
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Non cap sensitive explosive is also known as

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It is the rate at which the detonation wave passes through a column of explosive

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Handwheel type bye pass valve fitted in proto . . . . . . . .

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Which of the following has poor water resistant property?

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The Type booster occupy only 1-2% of total explosive charge

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Strength of any weight of explosive compared with the same weight of . . . . . . . .

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The temperature of the sealed of fire area is increasing or decreasing observed by means of . . . . . . . .

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A person inhales . . . . . . . . l/min oud O2 consumption l/min . . . . . . . . during rest.

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The reversal prevents the smoke and fumes from reaching the working.

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In which of the following case the conditions requiring use of permitted explosives has not been made mandatory?

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The samples should be taken behind the sealed of area when the barometric pressure is . . . . . . . .

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Explosive is solid/liquid/mixture of substances which change themselves instantaiously in to large volume of gases at high temperature and pressure when . . . . . . . . applied to it.

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The primary or forward shockwave precedes the flames of explosion which consumes all . . . . . . . . of the air.

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Forcing fan requires air lock at . . . . . . . . shaft.

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The formula for calculating lower limit of explosibility of gas mixture [X] = ?

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Width wise, the sampling pipe should be placed . . . . . . . . of the stopping.

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In more dumping space facility the tippler used is . . . . . . . .

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It is the measure of the amount of energy released by an explosive during blasting and ability to do work.

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The equivalent resistance of 3 similar roadway of 0.09 N sec2m-8, resistance each connected in parallel is

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The reverse wave (or) secondary wave which is smaller face than . . . . . . . . wave.

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