A transformer transform-
20. A transformer transform- A. Power B. voltage C. current D. frequency A. Power "Answer" লেখাতে ক্লিক করলে সঠিক উত্তরটি দেখাবে। Click "Answer" for correct...
At relatively light load, transformer efficiency is low because-
19. At relatively light load, transformer efficiency is low because- A. transformer losses are high B. secondary output is low C. fixed loss is high...
Which of the following is not a basic element of a transformer?
18. Which of the following is not a basic element of a transformer? A. primary winding B. secondary winding C. mutual flux D. core C....
Transformers operating in parallel will share the load depending upon their-
17. Transformers operating in parallel will share the load depending upon their- A. Rating B. Per unit impedance. C. Leakage reactance. D. None of above...
The input power under no load condition of transformer consists of
16. The input power under no load condition of transformer consists of A. core losses and very small amount of copper loss in primary. B....
When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is-
15. When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is- A. 24v B....
Does the transformer draw any current when secondary is open?
14. Does the transformer draw any current when secondary is open? A. Yes B. No A. Yes "Answer" লেখাতে ক্লিক করলে সঠিক উত্তরটি দেখাবে। Click...
Which of the following is minimized by laminating the core of a transformer?
13. Which of the following is minimized by laminating the core of a transformer? A. Eddy current. B. Hysteresis loss. C. Copper loss D. Stray...
Lamination of transformer core is made of
12. Lamination of transformer core is made of A. cast iron B. silicon steel. C. cast steel D. aluminium B. silicon steel "Answer" লেখাতে ক্লিক...
What is the condition for maximum efficiency of a transformer?
11. What is the condition for maximum efficiency of a transformer? A. when copper loss = core loss B. when transformer run by unity power...