 | 1887 - 588 стор.
...the current in the armature, and the relation of EMF to currents is fully represented by a surface. In well-constructed machines the effect of the latter...to a minimum, but it can be by no means neglected. When a section of the armature coils is commutated it must inevitably be momentarily short-circuited,... | |
 | Royal Society (Great Britain) - 1886 - 626 стор.
...graphical construction for the characteristic. Taking the curve of magnetisation determined by one of us for wrought iron, and constructing a characteristic...upon the lead given to the brushes. Denote this by X, which we may also regard as an independent variable, as it is subject to arbitrary adjustment. If... | |
 | Sir Norman Lockyer - 1886 - 972 стор.
...the fixed coils round the magnets are not the only magnetising forces applied in a dynamo-machine. The currents in the moving coils of the armature have...variable, as it is subject to arbitrary adjustment. If I — F(4ir«i-) be the characteristic curve when no current passes through the armature, then I +... | |
 | Sir Norman Lockyer - 1886 - 684 стор.
...the fixed coils round the magnets are not the only magnetising forces applied in a dynamo-machine. The currents in the moving coils of the armature have...upon the lead given to the brushes. Denote this by A, which we may also regard as an independent variable, as it is subject to arbitrary adjustment. If... | |
 | Sir Norman Lockyer - 1886 - 784 стор.
...applied in a dynamo-machine. The currents in the moving coils of the armature have also their efifect upon the resultant field. In well-constructed machines...upon the lead given to the brushes. Denote this by Л, which we may also regard as an independent variable, as it is subject to arbitrary adjustment.... | |
 | 1892 - 652 стор.
...current in the armature — and the relation of EMF to currents is fully represented by a surface. In well-constructed machines the effect of the latter...to a minimum, but it can be by no means neglected. When a section of the armature coils is corn-mutated it must inevitably be momentarily short-circuited;,... | |
 | Royal Society (Great Britain) - 1892 - 612 стор.
...the current in the armature, and the relation of EMF to currents is fully represented by a surface. In well-constructed machines the effect of the latter...to a minimum, but it can be by no means neglected. When a section of the armature coils is commutated it must inevitably be momentarily short-circuited,... | |
 | John Hopkinson - 1893 - 268 стор.
...armature; and the relation of EMF to currents is fully represented by a surface. In well constructed machines the effect of the latter is reduced to a minimum, but it can be by no means neglected. When a section of the armature coils is commutated, it must inevitably be momentarily short circuited... | |
 | John Hopkinson - 1901 - 380 стор.
...the current in the armature ; and the relation of EMF to currents is fully represented by a surface. In wellconstructed machines the effect of the latter...to a minimum. but it can be by no means neglected. When a section of the armature coils is commutated, it must inevitably be momentarily short circuited... | |
 | John Hopkinson - 1901 - 378 стор.
...the current in the armature, and the relation of EMF to currents >s fully represented by a surface. In well-constructed machines the effect of the latter...to a minimum, but it can be by no means neglected. When a section of the armature coils is commutated it must inevitably be momentarily short-circuited,... | |
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... the currents in the moving coils of the armature have also their effect on the resultant field. There are in general two independent variables in a dynamo machine, the current around the magnets and the current in the armature, and the relation of... 
