Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is rectangular co- sinusoidal flat-topped sinusoidal rectangular co- sinusoidal flat-topped sinusoidal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a fault at the terminal of a synchronous generator, the fault current is maximum for a line to ground fault. 3 - phase fault. line to line fault. 3 - phase to ground fault. line to ground fault. 3 - phase fault. line to line fault. 3 - phase to ground fault. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-φ alternator has negligible stator resistance. A short circuit test is conducted on this alternator. At a particular speed, a field current of If1 is required to drive the rated armature current. If the speed of the alternator is reduced to half, the field current required to maintain rated armature current Would be equal to If1. Woud be equal to 2If1. Would be equal to If1/2. Cannot be predicted due to insufficient data. Would be equal to If1. Woud be equal to 2If1. Would be equal to If1/2. Cannot be predicted due to insufficient data. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine, the demagnetizing effect of armature reaction is due to uneven air-gap length non-sinusoidal nature of armature mmf magnetic saturation in half of the field pole component of armature mmf along field axis uneven air-gap length non-sinusoidal nature of armature mmf magnetic saturation in half of the field pole component of armature mmf along field axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The starting resistance of DC motor is generally 1000 ohms. around 500 ohms. Infinitely large. Low. 1000 ohms. around 500 ohms. Infinitely large. Low. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, armature reaction refers to what? Effect of field flux on the armature flux. Effect of armature flux on the main field flux. None of these Effect of armature flux on the load. Effect of field flux on the armature flux. Effect of armature flux on the main field flux. None of these Effect of armature flux on the load. ANSWER DOWNLOAD EXAMIANS APP
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