Electrical Machines In DC generators, the residual magnetism is of the order of 15 %. 20 %. 2.5 %. 10 %. 15 %. 20 %. 2.5 %. 10 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque angle, in a synchronous motor, is the angle between None of these magnetizing electric current and back emf. the supply voltage and the back emf. the rotating stator flux and rotor flux. None of these magnetizing electric current and back emf. the supply voltage and the back emf. the rotating stator flux and rotor flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor speed of an induction motor is given by None of these Ns = 120f /p × ( 1 - r). Ns = 120f / p × ( 1 - s ). Nr = 120f / p × (1-s). None of these Ns = 120f /p × ( 1 - r). Ns = 120f / p × ( 1 - s ). Nr = 120f / p × (1-s). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature reaction mmf in a DC machines has a form of rectangular. sinusoidal. triangular. trapezoidal. rectangular. sinusoidal. triangular. trapezoidal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A motor operates in stable region at which of the following slip? low slip region both 1 and 2 unity slip high slip region low slip region both 1 and 2 unity slip high slip region ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine 72 number of coils are used. Find the number of commutator segments required? 72 37 74 36 72 37 74 36 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS