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Showing posts with the label Mining Exam

MCQ IN COAL INDIA (PART-2)

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 * Which diagram explains the limit of explosibility of CH4?                                              (1)coward  (2)le chetelier  (3)Graham's  (4)palvalov                                                                                                                                                 * The delay between the ignition and the application of the heat source termed as          (1)lag on ignition  (2) incubation period  (3)saturation per...

MCQIN COAL INDIA (PART-4)

 * Why galleries are sometimes staggered?              (1)It will help to install transport system   (2)to avoid excessive exposure of roof at a place  (3)to provide good support to the roof (4)it will be give maximum coal output.                                                                                                                       * What is the expected range of LBC of a 2.5m long,15cm diameter timber prop?                            (1)5-10kn  (2)50-60kn  (3)15-20kn (4)120-130kn                  ...

MCQ IN COAL INDIA (PART-3)

* Flame trap or flame arrestor is used with                (1) Conveyor   (2)direct haulage  (3)diesel locomotive  (4)shaker conveyor.                                                                                                                     * The flame trap of diesel locomotive is liable to choke up due to                                                            (1)dust in air (2)impure engine oil  (3)narrow aperture of plates (4)poor filter         ...