Q321
Open questionExhaust fan handles . . . . . . . . air.
Select an option to see the answer and solution.
Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
911
Questions
17/46
Page
Pick an option on a question to see the right answer and solution.
Q322
Open questionMaximum velocities of ventilating air at man hoisting shafts and haulage roads . . . . . . . . other than conveyor roads.
Select an option to see the answer and solution.
Q323
Open questionDust plan should be maintained in a scale of
Select an option to see the answer and solution.
Q324
Open questionCooling chemical placed in cooling chamber of protomark IV apparatus is . . . . . . . .
Select an option to see the answer and solution.
Q325
Open questionThe main purpose of seal at the floor level of fire stopping is
Select an option to see the answer and solution.
Q326
Open questionHose mask permits more freedom of movement to the wear's head compared to . . . . . . . .
Select an option to see the answer and solution.
Q327
Open questionThe pressure difference that would be produced by a mechanically perfect fan running under ideal conditions and connected to an evasee chimney of infinite height called . . . . . . . .
Select an option to see the answer and solution.
Q328
Open questionFor how many years, the mining lease is given to a New company . . . . . . . .
Select an option to see the answer and solution.
Q329
Open questionExtraction of are from block formed during development.
Select an option to see the answer and solution.
Q330
Open questionThe contra rotating fans can be coupled together in series for getting . . . . . . . .
Select an option to see the answer and solution.
Q331
Open questionWhat is meant by vane efficiency.
Select an option to see the answer and solution.
Q332
Open questionDo not allow burning of fire inside a mine [non coal mine] and within . . . . . . . .m of an intake.
Select an option to see the answer and solution.
Q333
Open questionWhich drivages are generally safer.
Select an option to see the answer and solution.
Q334
Open questionPortable fire extinguishers are . . . . . . . .
Select an option to see the answer and solution.
Q335
Open questionWearer of proto mark IV apparatus can not . . . . . . . . with among brigade members.
Select an option to see the answer and solution.
Q336
Open questionGerman type air lock constructed.
Select an option to see the answer and solution.
Q337
Open questionBrine is a solution of . . . . . . . .
Select an option to see the answer and solution.
Q338
Open questionThe law related to quantity air fan speed is . . . . . . . .
Select an option to see the answer and solution.
Q339
Open questionBCF fire extinguishers use for quenching . . . . . . . . fires.
Select an option to see the answer and solution.
Q340
Open questionThe freezing point of nitroglycerin.
Select an option to see the answer and solution.