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Mine Ventilation MCQs Questions & Answers | Mining Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Mine Ventilation. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Mine Ventilation chapter is particularly important for students studying mining engineering. Page-4 section-1

Each section contains 100 MCQs on Mine Ventilation .
31
The methane air mixture become explosive with the minimum percentage of oxygen.
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Answer: Option A
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32
A fan running at a speed of 280 rpm circulates 105 m3/s of air in a mine. If the power input to the motor for driving the fan is recorded to be 75 kW, with the combined efficiency of fan and motor at 70%. the fan pressure in Pa is
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Answer: Option C
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33
Pressure characteristic of a mine fan is given by. P = -0.06Q2 + 400. where P is the pressure in Pa and Q is the quantity in m3/s. The resistance of the mine is 0.19 Ns2/m8. The mine quantity in m3/s is
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Answer: Option D
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34
Two splits A and B are ventilated from an intake airway. Resistances of the splits are 0.5 Ns2m-8 and 0.8 Ns2m-8 respectively. A regulator is placed in split B to maintain a flow of 15 m3/s and 10 m3/s in splits A and B respectively as shown in the figure. The size of the regulator in m2 is
Mine Ventilation mcq question image
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Answer: Option A
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35
Quantity of air to be circulated to u/g workings depends on
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Answer: Option D
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36
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
Assertion: Both intake and return side stoppings must closed simultaneously in the event of sealing off a coal mine panel with explosion hazard following a fire.
Reason: By continuously ventilating the area till simultaneously closure of the stoppings, the possibility of an explosion hazard due to gas built is avoided.
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Answer: Option C
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37
Critical pressure of oxygen.
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Answer: Option C
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38
Moody diagram represents resistance coefficient in terms of
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Answer: Option A
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39
Given the following.
Rescue apparatus Characteristic
P. Draeger BG-4 1. Open circuit chemical oxygen self-rescuer
Q. MSA IW-65 2. Filter type self-rescuer
R. Draeger Pulmotor 3. Self-contained breathing apparatus
S. Oxvoks 4. Resuscitation apparatus
The correct match is
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Answer: Option C
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40
Which of the following instrument is used to measure the cooling power of the air?
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Answer: Option D
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