Which of the following properties is not necessarily desirable for the material
Which of the following properties is not necessarily desirable for the material for transformer core?
No-load current of a transformer has
No-load current of a transformer has
Natural air cooling is generally restricted for transformers up to
Natural air cooling is generally restricted for transformers up to
In a step-down transformer, there is a change of 15 A in the load current. This
In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of
Reduction in core losses and increase in permeability are obtained with transfor
Reduction in core losses and increase in permeability are obtained with transformer employing
A transformer can have zero voltage regulation at
A transformer can have zero voltage regulation at
Harmonics in transformer result in
Harmonics in transformer result in
The secondary of a current transformer is always short-circuited under operating
The secondary of a current transformer is always short-circuited under operating conditions because it
The efficiency of a transformer, under heavy loads, is comparatively low because
The efficiency of a transformer, under heavy loads, is comparatively low because
The ‘cogging’ of an induction motor can be avoided by
The ‘cogging’ of an induction motor can be avoided by
In a power or distribution transformer about 10 per cent end turns are heavily i
In a power or distribution transformer about 10 per cent end turns are heavily insulated
Which of the following is not a part of transformer installation?
Which of the following is not a part of transformer installation?