A) using transformer oil of better quality B) using the magnetic core of low reluctance C) using soft material for winding D) increasing the number of turns. Ans : (B)
A) eddy current losses will reduce B) frequency on secondary winding will change C) wave shape on secondary side will be distorted D) size of the transformer can be reduced. Ans : (D)
A) Eddy current loss B) Heat loss C) Hysteresis loss D) All of the above. Ans : (A)
A) To filter the transformer oil B) To arrest flow of moisture when outside air enters the transformer C) To provide cooling air D) To provide oxygen to the cooling oil. Ans : (B)
A) main body B) insulating oil C) winding D) core. Ans : (D)
A) Core loss B) Copper loss C) Eddy current loss D) Hysteresis loss. Ans : (B)
A) The frequency B) The power factor C) The power level D) The level of voltage. Ans : (D)
A) Copper loss B) Eddy current loss C) Hysteresis loss D) All losses have same magnitude. Ans : (A)
A) eddy current loss B) sum of hysteresis and eddy current loss C) hysteresis loss D) copper loss. Ans : (B)
A) bushings B) main body C) winding D) core. Ans: (C)