ExamVeda
Login
Home

Mine Environment MCQs Questions & Answers | Mining Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Mine Environment. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Mine Environment chapter is particularly important for students studying mining engineering. Page-5 section-1

41
A fan ventilating a heading through a duct of 750mm diameter circulates 5m3s-1 of air at the face. Calculate the heat added to the air by the fan, if the input power of the fan is equal to 3kW.
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
42
Find the percentage of blackdamp from the mine air sample (pressure by volume) shown below: O2 = 19.11; N2 = 79.04; CO2 = 0.25; CO = 0.02; CH4 =1.58
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
43
The method factor for anemometer reading in duct varies with the
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
44
What is the acoustical power of a 100 hp air compressor whose rated sound power level is 130 dB
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
45
What do you mean by head co-efficient?
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
46
Electrostatic precipitator works on the principle of
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
47
Noise in fans is a function of A. Where A is given by
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
48
As per Indian law the methane concentration should not exceed "A%" in any part of the mine. A is given by
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
49
What are the composition of the solution in which the plates of the Oldham cap lamp battery remain immersed?
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
50
In ambient air of an School locality, the permissible concentration of PM10 measured on 24 hours average in μg/m3 is
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board