Electrical Machines Maximum power developed in a cylindrical synchronous machine depends on load angle synchronous reactance excitation both 1and 2 load angle synchronous reactance excitation both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC generator is run at full speed without any excitation. The open circuit voltage will be about 2 V. zero. 220 V. about 50 V. about 2 V. zero. 220 V. about 50 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic field which initially induces emf in the armature in a self excited DC generator is because of None of these residual magnetism. armature reaction. permanent magnets. None of these residual magnetism. armature reaction. permanent magnets. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direct-on-line (DOL) starters are not suitable for starting large DC motors, because the motor may run away. the starting torque becomes low. the starting current will be enormously high. the motor may not start. the motor may run away. the starting torque becomes low. the starting current will be enormously high. the motor may not start. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC machine has an armature resistance 1Ω. If the full load current is 20 A, the difference of induced voltage and generator is 0 V. 20 V. 40 V. 60 V. 0 V. 20 V. 40 V. 60 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs decrease. either of these. None of these increase. decrease. either of these. None of these increase. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS