Electrical Machines Which of the following represents the pitch factor? Cos α² Cos α sin (α/2) Cos (α/2) Cos α² Cos α sin (α/2) Cos (α/2) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A slip ring Induction motor runs at 290 rpm at full load, when connected to 50 Hz supply. Determine the number of poles and slip. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 40, s = 5.79 %. P = 20, s = 3.33 %. P = 50, s = 4.43 %. P = 60, s = 0.96 %. P = 40, s = 5.79 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms is connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 340 A. 250 A. 570 A. 460 A. 340 A. 250 A. 570 A. 460 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC compound motor the field regulator is provided to control the armature flux. control the field flux. limit the armature current. demagnetize the field partially. control the armature flux. control the field flux. limit the armature current. demagnetize the field partially. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For higher values of armature, the speed of a DC series motor is Constant. Proportional to the square of armature current. Proportional to armature current. Inversely proportional to armature current. Constant. Proportional to the square of armature current. Proportional to armature current. Inversely proportional to armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC machine windings are full pitched short pitched either of these None of these full pitched short pitched either of these None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS