Which of the following drives is suitable for mines where explosive gas exists ?

Related Mcqs:

Which of the following is an advantage of electric traction over other methods of traction ?

A. Faster acceleration B. No pollution problems C. Better braking action D. All of the above...

Tractive effort is required to_____________?

A. overcome the gravity component of train mass B. overcome friction, windage and curve resistance C. accelerate the train mass D. do all of the above...

Quadrilateral speed-time curve pertains to which of the following services ?

A. Main line service B. Urban service C. Sub-urban service D. Urban and sub-urban service...

________________ frequency is not common in low frequency traction system?

A. 40 Hz B. 25 Hz C. 16 Hz D. non of these...

The braking retardation is usually in the range__________________?

A. 0.15 to 0.30 km phps B. 0.30 to 0.6 km phps C. 0.6 to 2.4 km phps D. 3 to 5 km phps E. 10 to 15 km phps...