Electrical Machines An inverted V-curve of synchronous motor shows the variation of supply voltage and field current at constant excitation All of these power factor and dc excitation at constant load power factor and supply voltage during hunting supply voltage and field current at constant excitation All of these power factor and dc excitation at constant load power factor and supply voltage during hunting ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. What is the slip value? 0.02 0.4 0.2 0.04 0.02 0.4 0.2 0.04 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous motor, the damper winding is generally used to prevent hunting and provide the starting torque. reduce the eddy currents. reduce noise level only. provide starting torque only. prevent hunting and provide the starting torque. reduce the eddy currents. reduce noise level only. provide starting torque only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors are suitable for computer printer drive ? Shaded pole motor. Reluctance motor. Stepper motor. Hysteresis motor. Shaded pole motor. Reluctance motor. Stepper motor. Hysteresis motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements is/are correct statements? All of these EMF per turn in HV winding is less than EMF per turn in LV winding EMF per turn in HV winding is more than EMF per turn in LV winding EMF per turn in both the windings are equal All of these EMF per turn in HV winding is less than EMF per turn in LV winding EMF per turn in HV winding is more than EMF per turn in LV winding EMF per turn in both the windings are equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An electric motor with constant output power will have a torque speed characteristics in the form of a Rectangular hyperbola Straight line parallel to the speed axis. Straight line through the origin. Circle about the origin. Rectangular hyperbola Straight line parallel to the speed axis. Straight line through the origin. Circle about the origin. ANSWER DOWNLOAD EXAMIANS APP
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