Electrical Machines When two DC series motors are connected in parallel, the resultant speed is less than normal speed. normal speed. more than normal speed. zero. less than normal speed. normal speed. more than normal speed. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be somewhat more than 230 V somewhat less than 230 V 230 V 6 V somewhat more than 230 V somewhat less than 230 V 230 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What happens if fifth multiples of harmonics is given to induction motor? Fail to start. It will rotates in normal operation. Either short circuit or open circuit occurs. It will rotates in reverse direction. Fail to start. It will rotates in normal operation. Either short circuit or open circuit occurs. It will rotates in reverse direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor of a three phase induction motor has an impedance of 0.4 + j4 ohm per phase at standstill the maximum torque occurs at a slip of _____________. 10 %. 50 %. 25 %. 15 %. 10 %. 50 %. 25 %. 15 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is used in elevators? DC compound motor. DC shunt motor. DC series motor. None of these. DC compound motor. DC shunt motor. DC series motor. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Centrifugal switch is absent in which of the single phase induction motor? PSC (permanent split capacitor) motor. Split phase motor. Shaded pole motor. None of these PSC (permanent split capacitor) motor. Split phase motor. Shaded pole motor. None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS