GATE MN · 2024 · MN
Question 65: Mine Development
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Question 65
MNNAT2 marksNeeds review
In a development coal face, 12 holes are drilled and charged with explosive. Holes are initiated with electric delay detonators connected in series. The length of a detonator lead wire is 1.5 m. The length of the blasting cable is 120 m.
Data are as given:
Resistance of each detonator: 1.48 Ω
Resistance of lead wire: 0.04 Ω/m
Resistance of one wire of the blasting cable: 0.009 Ω/m
The total resistance of the circuit in Ω, is _____. (round off up to 2 decimals)
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2024MN
GATE MN 2024 · Paper 1
Mining Engineering · Original paper archive
- Section
- Mining Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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