FAULTS THEIR CAUSES AND REMEDIES OF ALTERNATORS MCQs – CHAPTER 7 DAE 20 min Score: 0 Attempted: 0/20 Subscribe 1. What is the most likely cause of abnormal currents and voltages in a 3-phase salient pole type alternator? (A) Out-of-step operation (B) Rotor winding faults (C) Loss of excitation (D) Stator winding faultsShow All Answers 2. What is the most likely cause of reduced output voltage and reactive power in a 3-phase salient pole type alternator? (A) Stator winding faults (B) Rotor winding faults (C) Out-of-step operation (D) Loss of excitationShow All Answers 3. What is the most likely cause of oscillations in speed, torque, voltage, and current in a 3-phase salient pole type alternator? (A) Stator winding faults (B) Out-of-step operation (C) Loss of excitation (D) Rotor winding faultsShow All Answers 4. What is the main function of an alternator? (A) To turn mechanical energy into electrical power (B) To regulate the voltage of the battery (C) To control the ignition system of the engine (D) To monitor the temperature of the coolantShow All Answers 5. What is a common cause of alternator failure due to battery issues? (A) All of the above (B) Battery overcharge (C) Battery polarity reversal (D) Battery shortShow All Answers 6. What is a symptom of a faulty alternator that causes a short circuit? (A) All of the above (B) Melted wiring system (C) Dead battery (D) Flickering headlightsShow All Answers 7. What is a component of an alternator that can wear down over time and affect its performance? (A) Brushes (B) Stator coil (C) Rectifier (D) All of the aboveShow All Answers 8. What is a device that connects the negative end of a battery to the vehicle’s frame and can cause alternator problems if it malfunctions? (A) Voltage regulator (B) Fuse box (C) Starter solenoid (D) Ground strapShow All Answers 9. What is a test that can be done to diagnose an alternator problem caused by AC voltage leak? (A) Measuring AC voltage at the alternator (B) All of the above (C) Inspecting the condition of the aux belt (D) Checking the resistance of the diodesShow All Answers 10. What is a common problem with alternators on newer, more complex cars that requires more sophisticated diagnosis? (A) Electrical distribution system issue (B) All of the above (C) Regulator issue (D) Smart charge issueShow All Answers 11. What is a factor that can affect the service interval of an alternator and lead to premature failure? (A) Lack of maintenance (B) Oil and coolant leakage (C) All of the above (D) Clogged issueShow All Answers 12. What is a possible consequence of having a defective alternator while driving? (A) The battery warning light will come on the dashboard (B) The power steering will fail (C) The engine will stall (D) All of the aboveShow All Answers 13. What is a recommended remedy for dealing with a faulty alternator? (A) Performing DIY repairs at home with online guides (B) Towing your car to reliable auto stores and having professional mechanics check it (C) Replacing the battery with a new one (D) None of the aboveShow All Answers 14. What is the most likely cause of abnormal currents and voltages in a smooth cylindrical type 3-phase non-salient pole type alternator? (A) Stator winding faults (B) Rotor winding faults (C) Loss of excitation (D) Out-of-step operationShow All Answers 15. What is the most likely cause of reduced output voltage and reactive power in a smooth cylindrical type 3-phase non-salient pole type alternator? (A) Stator winding faults (B) Rotor winding faults (C) Loss of excitation (D) Out-of-step operationShow All Answers 16. What is the most likely cause of oscillations in speed, torque, voltage, and current in a smooth cylindrical type 3-phase non-salient pole type alternator? (A) Stator winding faults (B) Out-of-step operation (C) Loss of excitation (D) Rotor winding faultsShow All Answers 17. What is the name of the rotating magnetic field that produces power in an alternator? (A) Rotor (B) Stator (C) Armature (D) CommutatorShow All Answers 18. What is the name of the stationary winding that carries alternating current in an alternator? (A) Rotor (B) Commutator (C) Armature (D) StatorShow All Answers 19. What is the name of the device that converts alternating current to direct current in an alternator? (A) Rectifier (B) Stator (C) Rotor (D) RegulatorShow All Answers 20. What is the name of the device that controls the output voltage of an alternator? (A) Rotor (B) Regulator (C) Rectifier (D) StatorShow All Answers
