Engineering Physics (Practice Test MCQs)

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1. The SI unit of electric current is:





2. Ohm’s law states the relationship between:





3. The resistance of a conductor depends on:





4. The unit of electrical power is:





5. Which of the following is a passive component?





6. The frequency of AC supply in most countries is:





7. Kirchhoff’s Current Law (KCL) is based on the conservation of:





8. The unit of capacitance is:





9. The device used to measure electric current is:





10. A fuse is used for:





11. The material commonly used in household wiring is:





12. The symbol “Ω” represents:





13. The term EMF stands for:





14. The energy consumed by a 100 W bulb in 10 hours is:





15. The main function of a transformer is to:





16. The power factor of a purely resistive circuit is:





17. A three-phase supply has how many phases?





18. The instrument used to measure resistance is:





19. The unit of magnetic flux is:





20. The direction of current is taken as:





21. Which of the following is an example of a non-renewable energy source?





22. The main function of a rectifier is to:





23. The SI unit of inductance is:





24. The short circuit occurs when:





25. Which material is commonly used as an insulator?





26. The unit of electric charge is:





27. The time period of a 50 Hz AC supply is:





28. A DC generator converts:





29. The color code for the neutral wire in most countries is:





30. Which of the following is a source of direct current?





31. The relation between energy, power, and time is:





32. The instrument used to measure alternating current is:





33. The purpose of earthing is to:





34. The type of current used in household appliances is:





35. The SI unit of conductance is:





36. The material used for making fuse wire is:





37. A capacitor stores:





38. The total resistance of resistors in series is:





39. The total resistance of resistors in parallel is:





40. Which law governs the magnetic field around a conductor?





41. The device used to convert DC to AC is called:





42. The magnetic effect of current was discovered by:





43. In a purely inductive circuit, the current:





44. The power factor of a purely capacitive circuit is:





45. The instrument used to measure high resistance is:





46. Electric energy is commercially measured in:





47. The EMF of a cell is measured in:





48. The device used to store electrical energy is:





49. The primary winding of a transformer is connected to:





50. A short circuit results in:





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