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The spring index is 6. Determine the coil wire diameter and number of turns with die following data: Modulus of rigidity = 80 GPa: Modulus of elasticity = 200 GPa: Allowable stress = 500 MPa.
Design a concentric spring for an air craft engine valve to exert a maximum force of 5000 N under a deflection of 40 mm.
The mean diameters of the spring A and B are 100 mm and 70 mm respectively and wire diameters are 13 mm and 8 mm respectively. Find the load taken and the maximum stress in each spring.
If the yield shear stress is 700 MPa and the endurance stress is 350 MPa. Find the size of the spring wire and mean diameter of the spring coil.
Find the maximum shear stress induced in the spring and the amount of compression produced. The modulus of rigidity for the material of the spring wire is 84 kN/mrn2.
The compressor has an isentropic efficiency of 75%. Liquid vapor mixture (x_3= 10%) leaves the condenser at 12 bar. The flow rate of refrigerant 22 is 0.8 kg/s. Determine the compressor power.
Determine the A) compressor power, B) the rate of heat transfer from the working fluid passing through the condenser, C)heat transfer rate from the cooled space to the working fluid
Determine(a) the total velocity of the collar, (b) the total acceleratin of the collar, (c) the relative acceleration of the collar with respect to the arm.
Determine (a) at the time at which the velocity will be zero, (b) the position and distance traveled by the particle at the time, (c) the acceleration of the particle at that time.
The wheel has a mass of 50 kg and a radius of gyration of 125 mm about its center of mass G. Determine its angular velocity after it rolls over the step. The wheel does not lose contact with the step
A 1 lb ball is thrown at the rod with a velocity v = 50 ft/s and strikes the rod at C. Determine the angular velocity of the rod just after the impact. Take e = 0.7 and d = 2 ft.
If the heat supplied to a room is at a temperature of 30 degrees C, what is the maximum rate of heating (in kW heat per kW power input) that can be generated?
The pump and turbine are isentropic. a) What is its thermal efficiency? b) At what rate is energy being given off by heat transfer to the cold thermal reservoir?
What are the Mach Number, static pressure, stagnation pressure, and stagnation temperature at the duct exit? (psia, F) b.) How much heat transfer to the air would be required to choke the flow at th
The gas undergoes a combustion with 120%of the stoichiometrically required air. Write a balanced reaction equation calculate the fuel air ratio on a molar and mass basis.
Determine the magnitude of the couple being applied to the drum, knowing the the coefficient of kinetic friction between the belt and the drum is 0.25, that a=4 in.
Find the power required by the compressor in KW. The refrigeration capacity in tons. The coefficient of performance of the cycle.
At time t=0 a particle is at the origin of a CW frame with relative velocity (delta Vo = v ) in the j direction. What will be the relative speed of the particle after one-half orbital period of the
Calculate the temperature, specific enthalpy and specific entropy at the exit b) Calculate the inlet and exit specific volumes c) Show the process in a T-v diagram.
The cooling water leaves the exchanger at 88oC. a) Calculate the rate of heat exchange between oil and water streams b) Calculate the exit temperature of oil flow.
If the mixed stream (warm stream) leaves the chamber at 300 kPa, calculate its temperature as it exits the chamber.
Determine the amount of heat that will be transferred to the room when the steam pressure has dropped to 100kpa. Also show the process on a P-v diagram with respect to saturation lines.
Feed-water heaters are used to increase the efficiency of steam power plants. The heater loses heat at a rate of 50 J/g of exiting mixture. What fraction of the exit stream is steam?
The air does work in the amount of 30 kJ/kg and 14 kJ/kg of heat is removed from the air during the expansion. The initial volume is 0.00878 m3. Calculate the entropy change of the air per kilogram.
The gas undergoes complete combustion with 120% of the stoichimetrically required air. A) Write the balanced equation B) Calculate the fuel-air ratio on a molar and mass basis.