signal arm वाक्य
उदाहरण वाक्य
मोबाइल
- :What got me wondering was that small horizontal bar down from the signal arms that should have some significance and indicate a " non-human semaphore " ( or a definitely, um, male human ) . ..
- Drivers of trains must know which signal arm applies to which route, and the speed limit on that route; accidents have resulted from drivers either mis-reading splitting signals or forgetting speed restrictions, and consequently approaching junctions too fast.
- The levers each were lockable in four different positions, that exactly corresponded to the position of signal arm : 0?( arm hanging downward parallel to the mast ), 45? 90?( perpendicular to the mast ), and 135?
- On changing from the'warning'aspect ( Vr 0 ) to the'clear'aspect ( Vr 101 or 102 ) both halves of the disc folded to the rear, so that, in their place, a signal arm appeared pointing up and to the right.
- Since by day the signal arms were clearly visible from the signal box from which they were worked, the system had no repeater in the signal box to confirm a signal was actually showing the aspect corresponding to the lever position.
- The advantage of the upper quadrant signal is that should the signal wire break, or the signal arm be weighed down by snow ( for instance ), gravity will tend to cause the signal to drop to the safe " danger " position.
- At night ( or in poor visibility in daytime ) an oil lamp displayed a white light when the signal was at'all clear'; when the signal arm moved to the horizontal danger position it brought a red lens in front of the light, so that a red light was then displayed to oncoming trains.
- If you have a long signal arm and a short, heavy counterweight-then much more snow / ice can accumulate on the signal arm and the longer moment would compound that problem to the point where the arm would be too heavy to lift . Then it would show " clear " when it's not clear-which would be " A Very Bad Thing ".
- If you have a long signal arm and a short, heavy counterweight-then much more snow / ice can accumulate on the signal arm and the longer moment would compound that problem to the point where the arm would be too heavy to lift . Then it would show " clear " when it's not clear-which would be " A Very Bad Thing ".
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