Introduction to Mining Engineering MCQs Questions & Answers

31

Match the following, for standard diamond rods

Specification	Outer diameter in mm
P. AW	p. 34.9
Q. BW	q. 44.4
R. EW	r. 54.0
S. NW	s. 66.7

A) P-r, Q-q, R-r, S-p B) P-r, Q-p, R-s, S-q C) P-q, Q-r, R-p, S-s D) P-q, Q-r, R-s, S-p

Discuss

Answer & Solution

Answer: Option C

Solution:

In standard diamond rod specifications:
AW corresponds to an outer diameter of 34.9 mm (P)
BW corresponds to an outer diameter of 44.4 mm (Q)
EW corresponds to an outer diameter of 54.0 mm (R)
NW corresponds to an outer diameter of 66.7 mm (S)

Matching these with the given options:
Option C correctly matches:
P (AW) with q (34.9 mm)
Q (BW) with r (44.4 mm)
R (EW) with p (54.0 mm)
S (NW) with s (66.7 mm)

Therefore, Option C is the correct match for the standard diamond rod specifications.

32

In any working below ground there should be provided at least two shaft or incline which should be away from each other by a minimum distance

A) 12.5m B) 13.5m C) 14.5m D) 15.4m

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

33

A vertical ore body having a consistent width of 100 m has been excavated by the open pit method up to a depth of 100 m at a pit slope angle of 45°. The figure shows the cross section of the open pit. If the ore body is further excavated by a depth of 10 m, maintaining the same pit slope angle, the ratio of waste rock to ore is
Introduction to Mining Engineering mcq question image

Introduction to Mining Engineering mcq question image

A) 1.2 B) 2.1 C) 3.0 D) 3.9

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

34

The delay interval in short delay detonator is

A) 25 ms B) 30 ms C) 15 ms D) 35 ms

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

35

What is the name of the media through which coal pulp in hydraulic mining is sent from face to pulp sump or coal crusher?

A) Pipe B) Conduit C) Flumes D) Wagon

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

36

Shale as immediate roof in underground, coal mine is not suitable because

A) It is difficult to support B) It gives less waning prior to fall C) It has high affinity to moisture & departs from roof easily D) It gives bad sound while testing

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

37

Blasting of stope in VCR method consists of

A) Blasting one row after another B) Creating initial slot going for mass blast C) Blasting all the holes in slices D) Blasting one column after another

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

38

Which one of tire following HEMM is a tyre mounted?

A) LHD B) SDL C) Dozer D) Shovel

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

39

In an opencast mine shown in the figure below, the coal has a density of 1.4 t/m³. Assuming mining operation started from plane XY, the operating stripping ratio under the given conditions in m³/t is
Introduction to Mining Engineering mcq question image

A) 2.32 B) 2.47 C) 2.56 D) 2.64

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

40

Manhole should be provided along the haulage length at every "A" meter distance. A is given by

A) 20 B) 50 C) 120 D) 200

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Introduction to Mining Engineering MCQs Questions & Answers | Mining Engineering