Why the pumps are connected in parallel or series? Since each pump generates a head H corresponding to a flow Q, when connected in series, the total head developed is Ht = H1 + H2, where H1, H2 are the heads developed by the pump in series at the common flow rate Q. With pumps […]
What is the difference between number average and weight average molecular weights?
What is the difference between number average and weight average molecular weights? The number average molecular weight is the total weight of the sample divided by the number of molecules in the sample. To get the number average molecular weight you divide the total weight of the sample by the total number of the molecules. […]
What are the characteristics of a person with autism?
What are the characteristics of a person with autism? These are some of the characteristics of ASD: problems with social interaction with others. unusual interest in objects. need for sameness. great variation in abilities. under or over reaction to one or more of the five senses: sight, touch, taste, smell, or hearing. repeated actions or […]
What are the biggest challenges for the integration of UAS into the NAS?
What are the biggest challenges for the integration of UAS into the NAS? A major challenge to routine operations by UAS in the NAS is the need for special handling by air traffic control (ATC). This need is due to the discrepancies between how UAS vehicles and manned aircraft are presently managed. What is the […]
What is the theoretical density of iron?
What is the theoretical density of iron? 7.87 g/cm3 How do you calculate theoretical density? It is easy to calculate the true density from the molecular weight and the unit cell volume. If the unitcell has more than one formula unit you have to multiply it with the formula weight and divide by the unitcell […]
What is the difference between laminar flow and turbulent flow?
What is the difference between laminar flow and turbulent flow? Laminar flow or streamline flow in pipes (or tubes) occurs when a fluid flows in parallel layers, with no disruption between the layers. Turbulent flow is a flow regime characterized by chaotic property changes. This includes rapid variation of pressure and flow velocity in space […]
How do you find the maximum unambiguous range?
How do you find the maximum unambiguous range? The maximum range from which a transmitted radar, lidar, or sodar pulse can be reflected and received before the next pulse is transmitted. This range, rmax, is given by rmax = cT/2, where T is the interpulse period and c is the speed of light (or speed […]
What is Matrix chain multiplication method in dynamic programming?
What is Matrix chain multiplication method in dynamic programming? A dynamic programming algorithm Take the sequence of matrices and separate it into two subsequences. Find the minimum cost of multiplying out each subsequence. Add these costs together, and add in the cost of multiplying the two result matrices. What is the best way to solve […]
Is strength a material property?
Is strength a material property? Design terms. Ultimate strength is an attribute related to a material, rather than just a specific specimen made of the material, and as such it is quoted as the force per unit of cross section area (N/m2). The ultimate strength is the maximum stress that a material can withstand before […]
How do you calculate shaft diameter from torque?
How do you calculate shaft diameter from torque? Inputs that we need to calculate shaft diameter τ = Torsional stress induced at the outer surface of the shaft (Maximum Shear stress). r = Radius of the shaft. T = Twisting Moment or Torque. J = Polar moment of inertia. C = Modulus of rigidity for […]