Mine Ventilation - Study Mode

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[#191] Nitrous fumes are formed during

(A) fires

(B) blasting

(C) explosions

(D) bursts

Correct Answer

(B) blasting

[#192] MEMACS-I will detect methane in the range . . . . . . . . in the general body of air.

(A) 0 - 3%

(B) 0 - 5%

(C) 0 - 8%

(D) 0 - 10%

Correct Answer

(B) 0 - 5%

[#193] Exhaust fan located at the mouth of . . . . . . . . shaft.

(A) air shaft

(B) down cast shaft

(C) up cast

(D) all of these

Correct Answer

(C) up cast

[#194] Methane telemonitory system consists . . . . . . . . sets of equipment.

(A) 2 sets

(B) 3 sets

(C) 4 sets

(D) 5 sets

Correct Answer

(A) 2 sets

[#195] An Indian worker may continue to work reasonably well in u/g atmosphere where the wet bulb temperature is nearly about . . . . . . . .°C.

(A) 20

(B) 25

(C) 30

(D) 30.5

Correct Answer

(C) 30