Electrical Machines When the rotor of a 3 phase induction motor is blocked then the slip is 1. 0.3. 0.54. 0.7. 1. 0.3. 0.54. 0.7. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The demagnetising component of armature reaction in a DC generator reduces generator emf. results in sparking trouble. reduces inter poles flux density. increases armature speed. reduces generator emf. results in sparking trouble. reduces inter poles flux density. increases armature speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stepper motor is used in food processing computer printers All of these traction food processing computer printers All of these traction ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the effect of armature reaction ? Armature flux weakens the main field flux. Both option B and C. Armature flux distorts the main field flux. None of the options. Armature flux weakens the main field flux. Both option B and C. Armature flux distorts the main field flux. None of the options. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature MMF waveform of a DC machine is triangular. sinusoidal. rectangular. pulsating. triangular. sinusoidal. rectangular. pulsating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the reason for stationary armature essential in alternators above 5 KVA? Operating cost is less. Insulation requirement is less. Collecting of large current is simple. All of these Operating cost is less. Insulation requirement is less. Collecting of large current is simple. All of these ANSWER DOWNLOAD EXAMIANS APP
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