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Mining Engineering · Q31

Introduction to Mining Engineering

Engineering and GATE · Mining Engineering · question 31

Q31

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

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
Answer
D.
P-q, Q-r, R-s, S-p

Answer: Option C

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.