2. কোন ধরনের Motor-এর no-load speed সর্বোচ্চ হয়? 
                
             
         
        
                                                                        
                    
                    
                                                                                
                    
                    
                                                                                
                            
                                
                            
                            
                                
                            
                            
                                
                            
                             Cumulative compound motor
                         
                    
                    
                                                                                
                            
                                
                            
                            
                                
                            
                            
                                
                            
                             Differntiate compound motor 
                         
                    
                    
                                                         
                    
                            
                    ব্যাখ্যা: ব্যাখ্যা : At no-load a DC series motor rotates at dangerously high speed. A DC series motor should always be started on load. When the motor is connected across the supply mains without load, it draws small current from the supply mains.