mcqs on electrical machines,09 a transformer core is made up of a silicon steel laminations which has maximum flux density 1 tesla. if it was cold rolled grain oriented its flux density .transformer core usually uses grain-oriented laminated ,transformer core usually uses grain-oriented laminated sheets. the grain orientation reduces here as incorrect question / answer. important mcq on related subject the primary winding of a power transformer should always be .in a transformer, the core loss is found to be 52 watts at 40hz ,core loss in a laminated iron core transformer depends on many factors. in general, core loss is composed of two components: (1) eddy current loss in the iron .mcq of transformer page-1,the main purpose of using core in transformer is to a) decrease reluctance of the common enamel layer is coated over the lamination of a transformer core to..
transformer construction consists on two coils wound on a closed iron core. the purpose of this laminated construction is to reduce the eddy currents that
the transformer core is generally made of. a) alumimium b) silicon steel c) copper d) wood ans: (b). 22. which of the following is minimized by laminating the
the lamination of iron cores in transformers is because we want to limit what are called eddy currents. transformers are basically two coils of wire wrapped
question 92 : a shell type transformer is commonly used as it has question 95 : the flux in transformer core question 98 : tansformer core is laminated.
the core is the vital part of the transformer which provides a continuous magnetic path a minimum of air-gap. the core is construction with laminated steel sheet
electrical steel, soft magnetic material, hysteresis, transformer, motor, goss, inhibition that is used as core material in electrical transformer cores and electrical motors. silicon-steel, with the  direction in the length of the lamination.
open circuit test on a transformer gives : 98. transformer core is laminated in order to : ( a ) total loss ( b ) insulation resistance ( a ) decrease copper losses ( c )
which of the following does not change in a transformer? a transformer core is laminated to (a) reduce hysteresis loss (b) reduce eddy current losses (c)
4. eddy current losses in transformer cores and be reduced by the use of. solid cores; laminated cores; ferrites. select the correct answer using the codes given
46. greater the secondary leakage flux 47. a transformer core is laminated to 48. in the transformer following winding has got more cross-sectional area 49. the
the transformer laminations are insulated from each other by a) mica strip b) thin coat of varnish c) the purpose of providing an iron core in a transformer is to.
but you may be wondering as to how the primary and secondary windings are wound around these laminated iron or steel cores for this types of transformer
design of electrical machines questions and answers design of core and winding 1 multiple choice questions & answers (mcqs) focuses on design of core and how many types of cores are available for core type of transformer?
in order to minimize the eddy currents more,magnetic core is laminated . the hysteresis coefficient of silicon steel is less, so hysteresis loss can be reduced. used
loss (a) can be reduced by constructing the core with laminated sheets of alloy s is always dimensionless (a) true (b) false (3) the ideal transformer windings are eliminated . please answer the following multiple choice questions.
figure (a) shows eddy currents within solid iron transformer core. making the core out of thin laminations (figure b) parallel to the magnetic field with insulation
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high coercivity and low retentivity. the core of a transformer is made of soft iron because it has high permeability so it provides complete linkage of magnetic flux
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question is a transformer core is laminated to, options are (a) reduce hysteresis loss, (b) reduce eddy current losses, (c) reduce copper losses, (d) reduce
when copper loss = hysteresis loss 12) lamination of transformer core is made of c. the mutual flux. a. cast iron d. the applied voltage. b. silicon steel. 6) what kva
which of the following is minimized by laminating the core of a electrical transformers? hysteresis loss; eddy current loss; heat loss; all of the above. answer.
the core of a transformer is laminated to minimise the energy losses due to eddy currents. questions from aipmt 2006. 1. kirchhoff's first and second laws of
question 74 : increase in flux density in the transformer core reduces its. option-1 : size. question 77 : transformer core is laminated. option-1 : because it is
autotransformer: it will have only one winding wound over a laminated core. the primary and secondary share the same coil. auto also means self in language
the thickness of laminations used in a transformer is usually a) 0.4 mm to 0.5 mm b) 4 mm to 5 mm the purpose of providing an iron core in a transformer is to.
answer: transformer core is laminated to minimize the eddy current. laminated magnetic core reduces eddy currents. for this reason, electrically electrical engineering mcqs on power generation. contents1 the
question is transformer cores are built-up from laminations rather than from solid metal so that, options are (a) less a transformer core is laminated to