1. In electric cap lamps, lead peroxide is used as . . . . . . . .
2. Luminous efficiency is expressed in . . . . . . . .
3. The lumen output of fluorescent discharge tube being as much as . . . . . . . . times that of the incandescent filament bulb.
4. The lowest temperature at which a fine dry coal dust cloud can be ignited is
5. In which flame safety lamp automatic flame extinguisher is provided.
6. The weight of Britelite Audio visual alarm lamp . . . . . . . . kg.
7. Discharge lamps contains . . . . . . . . vapour.
8. Single alkaline cell gives an emf of . . . . . . . . volts.
9. The type of flame safety lamps permitted by DGMS for testing gas in all degree of gassiness.
10. It is the relative amount of luminous energy given by any source called . . . . . . . .
Read More Section(Miscellaneous in Mining)
Each Section contains maximum 100 MCQs question on Miscellaneous in Mining. To get more questions visit other sections.