Drilling and Blasting MCQs Questions & Answers | Mining Engineering Page-1 section-8

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10

1.
Most of the high explosives blasted with the help of detonator said to be

A. Fuse sensitive

B. Cap sensitive

C. Non-cap sensitive

D. All of these

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2.
Specifications of stone dust should be tested once in . . . . . . . . months.

A. 1

B. 2

C. 3

D. 4

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3.
Wind rose is used to show

A. Air pollution

B. Air velocity

C. Air blast

D. Air flow direction

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4.
Maximum velocities of ventilating air at other roadways.

A. 4 m/sec

B. 4.8 m/sec

C. 6 m/sec

D. 8 m/sec

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5.
The main mine fan has to run for all . . . . . . . . days.

A. 300

B. 365

C. 280

D. 100

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6.
Deck loading is very useful when

A. strata consists of soft rocks

B. strata consists of friable rocks

C. strata consists of alternate band of hard and softer rocks

D. seam water bearance is high

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7.
It would be advisable to design the ventilation system on the basis of . . . . . . . .

A. Dry bulb temperature

B. RH

C. Cooling power

D. Wet bulb temperature

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8.
It is good practice to select a station where there is no area changes particularly on the upstream side (ventilation survey) should atleast.

A. Five roadway diameter

B. Eight roadway diameter

C. Ten roadway diameter

D. Two roadway diameter

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9.
A.N explosives detonated by

A. Primer

B. Detonator

C. Booster

D. All of these

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10.
During blasting operation in underground workings which have approached within 9m of each other the Shotfirer shall not fire in any of the faces unless some conditions are complied with. Which of the following is not to be observed as per CMR 2017?

A. all persons from both the faces are to be withdrawn

B. persons shall be withdrawn only from the face where blasting is going to be held

C. the place has to be fenced off to prevent inadvertent entering of persons

D. all persons shall take proper shelter as stated in the statutes

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Drilling and Blasting MCQs Questions & Answers | Mining Engineering

1. Most of the high explosives blasted with the help of detonator said to be

Answer & Solution

2. Specifications of stone dust should be tested once in . . . . . . . . months.

Answer & Solution

3. Wind rose is used to show

Answer & Solution

4. Maximum velocities of ventilating air at other roadways.

Answer & Solution

5. The main mine fan has to run for all . . . . . . . . days.

Answer & Solution

6. Deck loading is very useful when

Answer & Solution

7. It would be advisable to design the ventilation system on the basis of . . . . . . . .

Answer & Solution

8. It is good practice to select a station where there is no area changes particularly on the upstream side (ventilation survey) should atleast.

Answer & Solution

9. A.N explosives detonated by

Answer & Solution

10. During blasting operation in underground workings which have approached within 9m of each other the Shotfirer shall not fire in any of the faces unless some conditions are complied with. Which of the following is not to be observed as per CMR 2017?

Answer & Solution

Read More Section(Drilling and Blasting)

1.
Most of the high explosives blasted with the help of detonator said to be

2.
Specifications of stone dust should be tested once in . . . . . . . . months.

3.
Wind rose is used to show

4.
Maximum velocities of ventilating air at other roadways.

5.
The main mine fan has to run for all . . . . . . . . days.

6.
Deck loading is very useful when

7.
It would be advisable to design the ventilation system on the basis of . . . . . . . .

8.
It is good practice to select a station where there is no area changes particularly on the upstream side (ventilation survey) should atleast.

9.
A.N explosives detonated by

10.
During blasting operation in underground workings which have approached within 9m of each other the Shotfirer shall not fire in any of the faces unless some conditions are complied with. Which of the following is not to be observed as per CMR 2017?