# Traction Mechanics

on May 6, 2013

Traction Mechanics is the study of train motion.

The mechanics involves conversion of overhead electrical power/diesel/steam power in rail horse power to haul a train encountering acceleration, train, grade, curve resistance and similarly braking.

Traction Mechanics involves concept of

for detailing the motion of a train.

• • • • • • • • • • HTML Slideshow by WOWSlider.com v3.8

### Units

The units followed in day to day talk of Raiways are different as compared to  conventional MKS system. Conversion table is given below for better understanding

 Item Symbol Railway convention MKS Time t Hours 3600 sec Distance D Kilometer 1000 meters Speed V Kmph 1000/3600=0.277m/sec Acceleration fa Kmph/sec 0.277m/sec/sec Weight W Tonne 1000Kg Force F Kgf 9.8Newton Energy/Work kWh kWh W-sec or N-m or Joules

### Formulas

where D-distance;V-final speed; U-initial speed; a-acceleration

where W in N-m or Joules or Watt-sec)

where TE is in Kgf, V in Kmph and HP=75*Kgf*m/sec

where  η is efficiency  of Loco

### There is 1 Comment

1. I read your guidance given regarding Group B Exam in Railway which was very practical

Top