An alternator is said to be over excited when it is operating at

Charging problem on my 55 amp alternator, the output to my regulator on my CASE MB 4/94 is reading 17 and a half volts. My charging light remains on, and increases in intensity with revving of the motor. I examined the diodes and they all test fine. The dashboard light comes on before starting the engine, which as I understand, reflex that the charging circuit is being properly excited. Is there something I’m missing which is causing the system's failure to keep my battery charged? I've now purchase two replacement regulators with no success and the alternator was recently rebuilt. Any suggestions would be appreciated, THANKs BADCASE Isolating shorts in the electrical circut Thanks for the suggestions, tomorrow I'll try to isolate some of the apparent electrical shorts which may be the reason I'm not getting my battery recharged, so far the charging circuit appears to be doing what it should though tracing a possible shorts in the confined spaces behind the dashboard and engine air intake is a pain in the butt. This job is further compounded by the bundles of wiring the county installed for auxiliary lights and implements which were disconnected long before I acquired the truck and simply left jammed into this same confined space. Bet your battery is exhibiting high cell resistance. Swap in another known-good battery and see if that controls the charge voltage. Or, use heavy jumpers and just jumper a good battery across the questionable one. I have a battery doing that rig...

An overexcited alternator always supplies lagging current to the connected load, which means that load is of lagging nature. Lagging load take active and reactive power from the supply or alternator. Therefore, reactive power flows outwards from an over-excited alternator. Important Points: • Under excited alternator works at the leading power factor • The normal excited alternator works at the unity power factor • The overexcited alternator works at lagging power factor For Synchronous motor its opposite of alternator, • Under excited synchronous motor works at lagging power factor • The normal excited synchronous motor works at the unity power factor • The overexcited synchronous motor works at a leading power factor

Leading power factor: If field excitation is such that Eb V the alternator is said to be over-excited and it draws lagging current. Unity power factor: If field excitation is such that Eb = V the alternator is said to be normally excited. More MCQS More E-Books About Us This Website is made For Electrical Engineering Student Who are Preparing For Electrical Engineering competitive Exam and Electrical Interviews and For All Types Of Electrical Engineering Exams-You Can Get Fully Explained MCQS for This Website II PGVCL II GETCO II DGVCL II UGVCL II MGVCL II GUVNL II

The correct answer is option is 4. Concept: A synchronous electric motor is an AC electric motor in which, at steady state, the rotation of the shaft is synchronized with the frequency of the supply current; the rotation period is exactly equal to an integral number of AC cycles. Synchronous motors contain multiphase AC electromagnets on the stator of the motor that create a magnetic field which rotates n time with the oscillations of the line current. Main Features of Synchronous Motor Following are the characteristic features of a synchronous motor − • A synchronous motor either runs at synchronous speed or not at all, i.e., while running, it maintains a constant speed from no-load to full load. • The speed of a synchronous motor is independent of load. • Synchronous motors are not inherently self-starting. Some auxiliary means have to be provided for starting . • A synchronous motor will stall if, while running, the load on the shaft is increased beyond the maximum limit that the machine can drive. • Synchronous motor can be made to operate under wide range of power factor both lagging and leading. Synchronous motor • Synchronous motors are capable of running at constant speed irrespective of the load acting on them. • Unlike induction motors where the speed of the motor depends upon the torque acting on them, synchronous motors have got constant speed-torque characteristics. • Therefore, f rom no-load speed to full-load speed, the torque of a 3-phase synchronous motor ...

Charging problem on my 55 amp alternator, the output to my regulator on my CASE MB 4/94 is reading 17 and a half volts. My charging light remains on, and increases in intensity with revving of the motor. I examined the diodes and they all test fine. The dashboard light comes on before starting the engine, which as I understand, reflex that the charging circuit is being properly excited. Is there something I’m missing which is causing the system's failure to keep my battery charged? I've now purchase two replacement regulators with no success and the alternator was recently rebuilt. Any suggestions would be appreciated, THANKs BADCASE Isolating shorts in the electrical circut Thanks for the suggestions, tomorrow I'll try to isolate some of the apparent electrical shorts which may be the reason I'm not getting my battery recharged, so far the charging circuit appears to be doing what it should though tracing a possible shorts in the confined spaces behind the dashboard and engine air intake is a pain in the butt. This job is further compounded by the bundles of wiring the county installed for auxiliary lights and implements which were disconnected long before I acquired the truck and simply left jammed into this same confined space. Bet your battery is exhibiting high cell resistance. Swap in another known-good battery and see if that controls the charge voltage. Or, use heavy jumpers and just jumper a good battery across the questionable one. I have a battery doing that rig...

The correct answer is option is 4. Concept: A synchronous electric motor is an AC electric motor in which, at steady state, the rotation of the shaft is synchronized with the frequency of the supply current; the rotation period is exactly equal to an integral number of AC cycles. Synchronous motors contain multiphase AC electromagnets on the stator of the motor that create a magnetic field which rotates n time with the oscillations of the line current. Main Features of Synchronous Motor Following are the characteristic features of a synchronous motor − • A synchronous motor either runs at synchronous speed or not at all, i.e., while running, it maintains a constant speed from no-load to full load. • The speed of a synchronous motor is independent of load. • Synchronous motors are not inherently self-starting. Some auxiliary means have to be provided for starting . • A synchronous motor will stall if, while running, the load on the shaft is increased beyond the maximum limit that the machine can drive. • Synchronous motor can be made to operate under wide range of power factor both lagging and leading. Synchronous motor • Synchronous motors are capable of running at constant speed irrespective of the load acting on them. • Unlike induction motors where the speed of the motor depends upon the torque acting on them, synchronous motors have got constant speed-torque characteristics. • Therefore, f rom no-load speed to full-load speed, the torque of a 3-phase synchronous motor ...

An overexcited alternator always supplies lagging current to the connected load, which means that load is of lagging nature. Lagging load take active and reactive power from the supply or alternator. Therefore, reactive power flows outwards from an over-excited alternator. Important Points: • Under excited alternator works at the leading power factor • The normal excited alternator works at the unity power factor • The overexcited alternator works at lagging power factor For Synchronous motor its opposite of alternator, • Under excited synchronous motor works at lagging power factor • The normal excited synchronous motor works at the unity power factor • The overexcited synchronous motor works at a leading power factor

Leading power factor: If field excitation is such that Eb V the alternator is said to be over-excited and it draws lagging current. Unity power factor: If field excitation is such that Eb = V the alternator is said to be normally excited. More MCQS More E-Books About Us This Website is made For Electrical Engineering Student Who are Preparing For Electrical Engineering competitive Exam and Electrical Interviews and For All Types Of Electrical Engineering Exams-You Can Get Fully Explained MCQS for This Website II PGVCL II GETCO II DGVCL II UGVCL II MGVCL II GUVNL II