Drilling And Blasting - Study Mode
[#631] Calculate the total resistance for 20 numbers of electric delay detonators connected in parallel, each detonator has resistance of 2 ohms and resistance of connecting wire and blasting cable is 8 ohms and 3 ohms respectively?
Correct Answer
(D) 11.1 ohms
[#632] The qualities of the stone dust should be
Correct Answer
Easily dispersable
[#633] Primex is the trade name for
Correct Answer
(A) Booster
[#634] Which of the following is true for ordinary electric detonator?
Correct Answer
(A) instantaneous type
[#635] The gradient from haulage engine to the brow is dipping nearly.
Correct Answer
(C) 1 in 80