Drilling and Blasting MCQs Questions & Answers | Mining Engineering

A. Single tube core barrel

B. Double tube core barrel

C. Saw toothed crown

D. Roller bits

A. Every week

B. Every day

C. Every 14 days

D. Every month

A. 200 m

B. 400 m

C. 500 m

D. 600 m

A. 16^th October 1971

B. 1^st May 1972

C. 30^th June 1973

D. 1^st November 1975

A. Gas mask

B. Reviving apparatus

C. Pulmoter

D. Equilizer

A. $$wg \propto {N^2}{\text{ or }}{Q^2}{\text{ or }}{V^2}$$

B. $$wg \propto \frac{1}{{{N^2}}}{\text{ or }}\frac{1}{{{Q^2}}}{\text{ or }}\frac{1}{{{V^2}}}$$

C. $$\frac{1}{{wg}} \propto {N^2}{\text{ or }}{Q^2}{\text{ or }}{V^2}$$

D. $$\frac{1}{{{V^2}}} \propto wg{\text{ or }}{Q^2}{\text{ or }}{V^2}$$

A. 0.75

B. 1.25

C. 1.75

D. 0.57

A. 3 m

B. 4.2 m

C. 4.8 m

D. 4.5 m

A. 12 m

B. 16 m

C. 18

D. 20 m

A. 45°

B. 60°

C. 55°

D. 40°