Repair & Maintenance of Electrical Equipment MCQs -DAE Electrical Engineering

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1. The main purpose of electrical equipment maintenance is to:




2. Preventive maintenance is carried out:




3. Corrective maintenance is performed:




4. The main tool used for insulation resistance testing is:




5. Insulation resistance should be measured:




6. The insulation resistance of motor windings should be:




7. The primary cause of motor failure is:




8. Bearings in electrical machines should be lubricated:




9. Vibration in motors indicates:




10. A thermal overload relay protects a motor against:




11. Overcurrent protection is provided by:




12. Core cleaning of transformers prevents:




13. The purpose of dielectric testing in transformers is to:




14. Regular maintenance of circuit breakers ensures:




15. In DC machines, commutators should be:




16. Brushes of DC machines should be:




17. A megger test is performed at:




18. Thermographic inspection helps to detect:




19. In preventive maintenance, check sheets include:




20. Motors showing unusual noise should be:




21. Oil in transformers should be tested for:




22. The main cause of transformer failure is:




23. In induction motors, rotor maintenance includes:




24. Surge protection devices protect equipment against:




25. Electrical connections should be:




26. Insulators should be checked for:




27. Periodic testing of protective relays ensures:




28. Overheating in motors is mainly caused by:




29. Insulation in cables should be:




30. A multimeter is used for:




31. Proper labeling of electrical equipment helps to:




32. Faulty capacitors in equipment can cause:




33. Safety during maintenance requires:




34. Energy meters should be maintained by:




35. Thermistors or temperature sensors in motors are used to:




36. Cleaning of switchgear prevents:




37. Brushes in AC commutator machines should be:




38. Thermal imaging cameras detect:




39. Protective earth connections are important to:




40. Tightening of terminals prevents:




41. Motor winding resistance measurement helps to detect:




42. A regular maintenance schedule improves:




43. DC motor armature should be checked for:




44. Transformer oil should be filtered to remove:




45. Overvoltage in motors can cause:




46. Loose connections in electrical panels can lead to:




47. Maintenance of emergency lighting ensures:




48. Equipment maintenance records help to:




49. Insulation testing should be done:




50. A safety switch is used to:




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