Related Questions

Which of the following is the main advantage of an auto-transformer over a two-winding transformer?
A Eddy losses are totally eliminated
B Copper losses are negligible
C Saving in winding material
D Hysteresis losses are reduced
Which of the following is the main advantage of an auto-transformer over a two winding transformer?
A Hysteresis losses are reduced
B Saving in winding material
C Copper losses are negligible
D Eddy losses are totally eliminated
While conducting short-circuit test on a transformer the following side is short circuited
A High voltage side
B Low voltage side
C Primary side
D Secondary side
The following constitute short-circuit in the armature winding.
A Insulation failure between two commutator bars
B Insulation failure between two turns of a coil
C Two of more turns of the same coil getting grounded
D All of the above
In deriving ac equivalent circuit for an amplifier circuit we short circuit
A All resistors
B All transistors
C All inductors
D All capacitors
Some wire- wound resistors have bifilar winding. This type of winding is used to
A Increase the thermal stability
B Reduce the tolerance
C Reduce the inductance of winding
D Double the power rating of the resistor
________ cooling is the process of dissipating the armature and field winding losses to a cooling medium circulating within the winding insulation wall
A Direct
B Indirect
C Conventional
D Any of the above
Which winding of the transformer has less cross-sectional area?
A Primary winding
B Secondary winding
C Low voltage winding
D High voltage winding
In the transformer following winding has got more cross-sectional area
A Low voltage winding
B High voltage winding
C Primary winding
D Secondary winding
Primary winding of a transformer
A is always a low voltage winding
B is always a high voltage winding
C could either be a low voltage or high voltage winding
D none of the above

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