Electrical Machines In Ward-Leonard method of speed control, the direction of rotation of motor is reversed usually reversing the connection of the generator armature terminal. motor armature terminal. generator field terminal. motor field terminal. generator armature terminal. motor armature terminal. generator field terminal. motor field terminal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous machine, if φ is the flux per pole and f is the frequency of the emf induced E then E ∝ f/φ E ∝ 1/(φf) E ∝ φf E ∝ φ/f E ∝ f/φ E ∝ 1/(φf) E ∝ φf E ∝ φ/f ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux involved in the emf equation of a transformer has rms value. average value. maximum value. total value. rms value. average value. maximum value. total value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? a positive finite value 0 a finite negative value ∞ a positive finite value 0 a finite negative value ∞ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Resistance commutation is used generally in case of None of these fractional kW DC machines. DC machines above 10 kW. DC machines bellow 5 kW. None of these fractional kW DC machines. DC machines above 10 kW. DC machines bellow 5 kW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A crusher is equipped with Slip ring induction motor. DC shunt motor. Reluctance motor. Synchronous motor. Slip ring induction motor. DC shunt motor. Reluctance motor. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
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