Drilling And Blasting - Study Mode
[#471] This is not a function of thermal emmissivity.
Correct Answer
(B) Rock weather ability
[#472] It is the ratio of the head at the operating point to Euler's head at zero capacity called . . . . . . . .
Correct Answer
(C) Headco-efficient
[#473] Vertical distance between two adjacent main levels, main horizone (or) main drives.
Correct Answer
(A) Length of back
[#474] The time interval lapses between application of a source of ignition to fire damp and the actual moment of ignition of gas called . . . . . . . .
Correct Answer
(A) Lagan ignition
[#475] Soda acid extinguishers suitable only for quency.
Correct Answer
(B) Class A fire