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Principles of Electrical Engineering MCQs – DAE Electrical Engineering

50 Score: 0 Attempted: 0/50
1. The SI unit of electric charge is:




2. Ohm’s law defines the relationship between:




3. The instrument used to measure current is called a:




4. One kilowatt is equal to how many watts?




5. The resistance of a wire depends on:




6. The reciprocal of resistance is called:




7. The unit of electric power is:




8. Which of the following is a good conductor of electricity?




9. The potential difference is measured in:




10. Kirchhoff’s current law (KCL) is based on the law of:




11. The direction of conventional current is from:




12. The power dissipated in a resistor is given by:




13. The unit of capacitance is:




14. The energy stored in a capacitor is:




15. In an inductor, energy is stored in the form of:




16. The phase difference between current and voltage in a pure resistor is:




17. The power factor of a purely inductive circuit is:




18. The frequency of AC supply in Pakistan is:




19. The component that opposes any change in current is:




20. The main function of a transformer is to:




21. The core of a transformer is made of:




22. The efficiency of an ideal transformer is:




23. Electric energy is measured in:




24. The instrument used to measure resistance is called:




25. In a series circuit, the current is:




26. In a parallel circuit, the voltage across each branch is:




27. The reactance of a capacitor decreases when frequency:




28. The reactance of an inductor increases when frequency:




29. The total resistance of parallel resistors is:




30. Power factor is given by:




31. The unit of magnetic flux is:




32. 1 Henry equals:




33. A device that converts mechanical energy into electrical energy is:




34. A DC motor converts:




35. The main cause of eddy current losses in transformers is:




36. The unit of inductive reactance is:




37. In a purely capacitive circuit, current leads voltage by:




38. The symbol β€œΞΌF” stands for:




39. Electrical power (P) is equal to:




40. The current that reverses direction periodically is called:




41. The device that stores charge is:




42. The instrument used to measure potential difference is:




43. Which law states that current is directly proportional to voltage?




44. Which material is used for making electric bulbs’ filament?




45. Insulators have:




46. A fuse wire is made of:




47. The heating effect of current is used in:




48. The efficiency of a machine is always:




49. The device that converts AC into DC is:




50. Electric current is measured in:




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