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Question 1:
Consider the gear train shown in the illustration.
A gear with 10 teeth is fixed on shaft A.
Gears with 48 teeth and 12 teeth are fixed on shall B.
Gears with 60 teeth and 15 teeth are fixed on shaft C.
A gear with 72 teeth is mounted on shaft D.
Suppose that the motor is spinning shaft A at a speed of 1800 rpm. State all speeds in units of rpm.
a) What is the speed of shaft B?
b) What is the speed of shall C?
c) What is the speed of shaft D?
a gas turbine engine has a pressure ratio of 9.2 to 1 and operates on an ideal brayton cycle. assume air enters at 25 c
air flows in a horizontal cylindrical duct of diameter d 100 mm. at a section a few meters from the entrance the
A cylinder filled with oil is under pressure from a piston. The diameter d of the piston is 90 mm and the compressive force F is 42 kN. The maximum allowable shear stress in the wall of the cylinder is 80 MPa. What is the minimum permissible thick..
If the final pressure is 1.0 MPa, determine (a) the temperature (°C) at the final state and (b) the heat transfer (kJ) during this process.
It is desired to design a wind turbine that will output 2MW of peak electrical power at a location where the average wind speed is 10 m/s and the average ambient conditions are 85 kPa and 5 ?C. What should the rotor blade length be if the aerodynamic..
Calculate the moment M which must be applied to the handle of the screw to raise the block - The coefficient of friction for the screw threads is 0.25, and the coefficient of friction for all mating surfaces of the block and wedge is 0.40. Neglect ..
feedwater in a steam power plant is to be heated in an ideal open feedwater heater that operates at a pressure of 0.5
a piston-cylinder device contains 2.5 kg of air at 150 kpa and 2 m3. the air is now compressed according to the
A heat engine operating on the Carnot cycle has an efficiency of 65%. The waste heat from the cycle is rejected to the atmosphere at 20 deg. C. at a rate of 250 kW. What is the temperature of the heat source driving the engine in deg. C? For the heat..
steam enters one inlet of an adiabatic mixing chamber at 1.4mpa and 300 c. at the second inlet steam enters at 1.4mpa
Draw a typical green building facades and floors showing natural air circulation - Describe how we can increase energy efficiency of a house.
an angled jet of water comes from the ground at 5 m s at a 35 degree angle from the horizontal. how high does the
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