Question:
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 , is____.(round off up to 2 decimals)
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 , is____.(round off up to 2 decimals)
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 , is____.(round off up to 2 decimals)
Updated On: Jul 18, 2024
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Correct Answer: 20.8
Solution and Explanation
The correct answer is: 20.80 or 21.90 (approx)
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