Commonly used standard capacitor is
Commonly used standard capacitor is
The laminations of the armature of a D.C. machine are usually _____ thick.
The laminations of the armature of a D.C. machine are usually _____ thick.
Damping of the Ballistic galvanometer is made small to
Damping of the Ballistic galvanometer is made small to
For measurement of inductance having high value, we should use
For measurement of inductance having high value, we should use
The high voltage winding is usually which of the following type ?
The high voltage winding is usually which of the following type ?
D.C. servomotors are used in
D.C. servomotors are used in
The change in flux linkages can be caused in which of the following ways ?
The change in flux linkages can be caused in which of the following ways ?
A power factor meter has
A power factor meter has
________ has a lowrelative permeability and is used principally in field frames
________ has a lowrelative permeability and is used principally in field frames when cost is of primary importance and extra weight is not objectionable.
In a D.C. machine the number of brush arms is _____ the number of poles.
In a D.C. machine the number of brush arms is _____ the number of poles.
________ is the common method of applying brushes to the commntator.
________ is the common method of applying brushes to the commntator.
The operation of a D.C. machine with large air gap lengths is comparatively
The operation of a D.C. machine with large air gap lengths is comparatively