Electrical Machines Ward-Leonard system for controlling the speed of a DC motor is used where The accuracy in speed control is required. The speed in both the direction is required. Very fine speed control over the whole range from zero to normal speed is required. All of above. The accuracy in speed control is required. The speed in both the direction is required. Very fine speed control over the whole range from zero to normal speed is required. All of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Oil impregnated paper. Vacuum. Mica. Glass. Oil impregnated paper. Vacuum. Mica. Glass. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Lamination of transformer core is made of cast steel. silicon steel. wrought iron. cast iron. cast steel. silicon steel. wrought iron. cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC mototr are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor? 14.28%. 18.25%. 15.30%. 16.67%. 14.28%. 18.25%. 15.30%. 16.67%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque angle, in a synchronous motor, is the angle between magnetizing electric current and back emf. the supply voltage and the back emf. None of these the rotating stator flux and rotor flux. magnetizing electric current and back emf. the supply voltage and the back emf. None of these the rotating stator flux and rotor flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Number of slip rings in 3-phase synchronous motor will be 1 2 0 3 or 4 1 2 0 3 or 4 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS