61) The emissivity for a black body is
                    Answer is: 
                    
                                
                                
            1
Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers
                        Answer is: 
                        
                all of the above
                        Answer is: 
                        
                all of these
                                Explanation: 
                                
                                                
                        
                                                
                    Free convection flow depends on
* density
* coefficient of viscosity
* gravitational force
                        Answer is: 
                        
                above which a liquid will remain a liquid
                                Explanation: 
                                
                                                
                        
                                                    The critical pressure of a liquid is the pressure above which a liquid will remain a liquid.
