Motion Picture Projection An Elementary Text book
Motion Picture Projection An Elementary Text book
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In our eReader you can find the full English version of the book. Read Motion Picture Projection An Elementary Text book Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Motion Picture Projection An Elementary Text book
What reading level is Motion Picture Projection An Elementary Text book book?
To quickly assess the difficulty of the text, read a short excerpt:
Remedy. Test the coils for polarity.
Incorrect Speed A certain amount of speed adjustment may be ob- tained by altering the position of the brushes. Mov- ing the brushes backwards from the neutral point has the effect of increasing the speed, whilst moving them forward reduces the speed.
Excessive Speed Symptom. Motor starts, then speed gradually in- creases till motor runs at very excessive speed. This only occurs when a motor starts light or on a very light load such as a loose pulley.
Cause.... If shunt or compound motor. Shunt coil connected in series with armature instead of in parallel.
On first switching on, the magnets excite, as the armature is stationary and allows the full shunt current to pass the coils. As the armature speeds up it puts a back E. M. F. In the circuit, gradually reducing the current passing and thus weakening the 212 MOTION PICTURE PROJECTION field. The faster the armature goes the weaker the field becomes. A short circuit in the shunt might produce same result if motor starts absolutely light.
What to read after Motion Picture Projection An Elementary Text book?
You can find similar books in the "Read Also" column, or choose other free books by James Ross Cameron to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Remedy. Test the coils for polarity.
Incorrect Speed A certain amount of speed adjustment may be ob- tained by altering the position of the brushes. Mov- ing the brushes backwards from the neutral point has the effect of increasing the speed, whilst moving them forward reduces the speed.
Excessive Speed Symptom. Motor starts, then speed gradually in- creases till motor runs at very excessive speed. This only occurs when a motor starts light or on a very light load such as a loose pulley.
Cause.... If shunt or compound motor. Shunt coil connected in series with armature instead of in parallel.
On first switching on, the magnets excite, as the armature is stationary and allows the full shunt current to pass the coils. As the armature speeds up it puts a back E. M. F. In the circuit, gradually reducing the current passing and thus weakening the 212 MOTION PICTURE PROJECTION field. The faster the armature goes the weaker the field becomes. A short circuit in the shunt might produce same result if motor starts absolutely light.
What to read after Motion Picture Projection An Elementary Text book?
You can find similar books in the "Read Also" column, or choose other free books by James Ross Cameron to read onlineMoreLess
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