The maximum voltage of electrical signals in underground mines having supported on insulators is
A. 30 V
B. 60 V
C. 125 V
D. 220 V
Answer: Option A
A. 30 V
B. 60 V
C. 125 V
D. 220 V
Answer: Option A
Combustable oils or materials not used for filling in . . . . . . . . Equipment
A. Hydraulic
B. Chemical
C. Biological
D. Eletrical
Out of the following belt conveyor related items which one is provided for safety for the persons?
A. Loop-take-up
B. Idler set
C. Audio-visual alarm
D. sequential control switch
Join The Discussion