Electrical Machines In DC machine torque is proportional to which of the following? both A and B armature current(Ia) None of these flux(φ) both A and B armature current(Ia) None of these flux(φ) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors uses slip rings? Induction motors DC Shunt Motor Synchronous motors Both Synchronous and Induction motor Induction motors DC Shunt Motor Synchronous motors Both Synchronous and Induction motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field to earth. in reverse. to an AC source. to a DC source. to earth. in reverse. to an AC source. to a DC source. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is Fmax. 3Fmax. (1/2)Fmax. (3/2)Fmax. Fmax. 3Fmax. (1/2)Fmax. (3/2)Fmax. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC shunt generator having a wave winding supplies 50 lamps, each of 60 W at 120 V. The armature and field resistance are 0.2 Ω and 60 Ω respectively. The current in each armature conductor is 27 A. 11.5 A. 23 A. 13.5 A. 27 A. 11.5 A. 23 A. 13.5 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, the no-load slip is generally equal to less than 1 %. 4 %. 1.5 %. zero. less than 1 %. 4 %. 1.5 %. zero. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS