DC Circuits
Galvanometer
An instrument which detects electric current is known as
Decreasing eddy current losses
Pole shoe of a DC machine is laminated for the purpose of
Either armature winding or field winding
The direction of rotation of universal motor can be reversed the by reversing the flow of current through
Voltage
A step-up transformer increases........
The field in which all lines of magnetic flux are parallel and equidistant
The uniform magnetic field is
Watts
The S.I. unit of power is
Heating
A DC generator may lose a residual magnetism due to
Either A.C. or D.C.
A universal motor can run on
Total transformer loss depends on volt-ampere
Transformers are rated in KVA instead of KW because........
Decreases with increasing cross-sectional area of material
The magnetic reluctance of a material
1 joule
One newton metre is same as
Increasing upto a limit and then remain almost constant
With the increases in field excitation of a DC generator its generated emf
Varying field flux with tapped field windings
Speed control of a universal motor is achieved by
Reduce eddy current loss
A transformer core is laminated to.......
Tesla
unit of magnetic flux density