Mine Ventilation - Study Mode
[#321] CO 2 is best suited for extinguisher
Correct Answer
(C) Class C fire
[#322] A gas mask does not include
Correct Answer
(D) Coolant canister
[#323] In a longwall panel, the main gate road is 1000 m long, 4.5 m wide and 2 m high. The gate road is to be used for airflow at the rate of 17 m 3 /s. Considering a coefficient of resistance of airways of 0.01, the pressure in Pa required to maintain the airflow in the gate road is
Correct Answer
(A) 51.83
[#324] The early indication of spontaneous heating of coal can be given by
Correct Answer
(A) Sweating of strata
[#325] Quantity of air to be circulated to u/g workings where 150 worker employed in a largest shift and daily production 500 te will be
Correct Answer
(B) 1250 m 3 /min