Chapter 6 TRANSISTORS MCQs 10 min Score: 0 Attempted: 0/10 Subscribe 1. . A transformer can operate from: (A) Fixed Supply (B) Positive (C) Alternating Supply (D) NegativeShow All Answers 2. . A transformer has only one winding: (A) Step up (B) Auto (C) Tapped (D) Step downShow All Answers 3. . Transformer is a __________: (A) Mechanical (B) Rotating device (C) Electronic device (D) Static deviceShow All Answers 4. . Statically induced E.M.F has types: (A) 4 (B) 5 (C) 3 (D) 2Show All Answers 5. . Transformer E.M.F depends upon: (A) No of turns (B) Flux (C) All of these (D) CurrentShow All Answers 6. . A step-up transformer: (A) Increases voltage (B) Increases current (C) Decreases voltage (D) Decreases currentShow All Answers 7. . A step-down transformer: (A) Increases voltage (B) Converts AC to DC (C) Keeps voltage same (D) Decreases voltageShow All Answers 8. . The primary purpose of a transformer is: (A) Generate electricity (B) Convert AC to DC (C) Change voltage levels (D) Store energyShow All Answers 9. . Transformer losses include: (A) Hysteresis loss (B) Eddy current loss (C) All of these (D) Copper lossShow All Answers 10. . Transformer efficiency can be increased by: (A) Reducing losses (B) Increasing current (C) Increasing voltage (D) Decreasing turnsShow All Answers