# Tractive Sentence Examples

- Moreover, the average
**tractive**power per locomotive and the average capacity per freight car advanced greatly in this period, although specific figures cannot be given. - There are certain fundamental relations common to all
**tractive**problems, and these are briefly considered in §§ i and 2, after which the article refers particularly to steam locomotives, although §§ 4, 5, 7, 8, 9, and 10 have a general application to all modes of traction. - The fundamental condition governing the design of all
**tractive**machinery is that the wheels belonging to the axles to which torque is applied shall roll along the rails without slipping, and exert a**tractive**force on the train. - The fundamental relation between the applied torque and the
**tractive**force F will be understood from fig. - Value of the
**tractive**force is required than this provides for, namely from 4 to 5 tons, the driving-wheels are coupled to one or more pairs of heavily loaded wheels, forming a class of what are called " coupled engines " in contradistinction to the " single engine " with a single pair of loaded driving-wheels. - In the first case all the driving is done on one or at most two axles, sufficient
**tractive**force being obtained by coupling these axles when necessary to others carrying heavy loads. - Produced by the combustion of 1 lb of coal, 15,000 Xo 06 =900 only are available for
**tractive**purposes. - Also let l be the length of the stroke in feet and let a be the area of one cylinder in square inches, then, assuming two cylinders of equal size, I.H.P. =2 planl550 (8) The I.H.P. at any instant is equal to the total rate at which energy is required to overcome the
**tractive**resistance R. - Thus if the maximum horse-power which a locomotive can develop is woo, the
**tractive**resistance R, at 60 m. - A side wind causes excessive flange friction on the leeward side of the train, and increases the
**tractive**resistances therefore very considerably, even though its velocity be relatively moderate. - To obtain the
**tractive**force the weight on the coupled wheels must be about five times this amount - that is.. - Dividing thr Hugh by V and multiplying through by 550, 2240W 2240Wa R =Were+W vry t G (23) ' 'an expression giving the value of R the total
**tractive**resistance. - First, it must be able to exert a
**tractive**force sufficient to start the train under the worst conditions possible on the railway over which it is to operate - for instance, when the train is stopped by signal on a rising gradient where the track is curved and fitted with a guard-rail. - If p is the mean pressure at any speed the total
**tractive**force which the engine is exerting is given by equation (25) above. - Then the
**tractive**force is, from (25), (149 X 19 2 X2.166)/6.25 =18,600lb =8.3 tons. - The engine can only exert this large
**tractive**force so long as the mean pressure is maintained at 149 lb per square inch. - Thus although at a slow speed the engine can exert a
**tractive**force of 18,600 lb, at 60 m. - It will be seen at once that with a
**tractive**force of 7400 lb a weight of 37,000 lb (=16.5 tons) would be enough to secure sufficient adhesion, and this could be easily carried on one axle. - When the road leads the train up an incline, however, the
**tractive**force must be increased, so that the need for coupled wheels soon arises if the road is at all a heavy one. - It is used to a limited extent for mountain-grade goods traffic, and has the advantage over the " Consolidation " or eight-coupled type of lighter axle loads for a given
**tractive**capacity. - Mag., 1886, 22, 535) experimented on the relation of
**tractive**force to magnetic induction. - Taylor Jones subsequently found a good agreement between the theoretical and the observed values of the
**tractive**force in fields ranging up to very high intensities (Phil. **Tractive**Force of a Magnet.-Closely connected with the results just discussed is the question what is the greatest**tractive**force that can be exerted by a magnet.**Tractive**Force of a Magnet.-Closely connected with the results just discussed is the question what is the greatest**tractive**force that can be exerted by a magnet.- This is at once evident when the
**tractive**force due to magnetization is expressed as 27rI 2 -}-HI. - If H could be increased without limit, so also could the
**tractive**force. - Webb to measure the
**tractive**resistance of trains on the London & North-Western railway, a**tractive**pull or push compresses two spiral springs by a definite amount, which is recorded to scale by a pencil on a sheet of paper, drawn continuously from a storage drum at the rate of 3 in. - Thus the diagram shows the
**tractive**force at any instant. - -
**Tractive**Fcrce.