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Air enters the compressor of a regenerative gas-turbine engine at 300 K and 100 kPa, where it is compressed to 800 kPa and 580 K. The regenerator has an effectiveness of 72%, and the air enters the turbine at 1200 K. For a turbine efficiency of 86%, determine (a) the amount of heat transfer in the regenerator and (b) the thermal efficiency of the cycle.
Wheel of radius r is driven by an arm OA. It is driving (without slip) wheel of a radius r2 which is fixed to a drum of radius r1. Load G is attached to the rope which winds on the drum. Calculate the speed of load G if the arm OA moves at n rev/m..
The 160-N weights of the arms AB and BC of the robotic manipulator act at their midpoints. Determine the sum of the moments of the three weights about A.
one liter of saturated liquid water is contained in a piston-cylinder assembly. initiallythe water pressure is 2bar.
a cylindrical nuclear fuel rod under steady conditions in a cooling bath has a 2-d temperature distribution of
Find the velocity of the bullet and block just after impact.
The number-average molecular weight of a polypropylene is 1100000 g/mol. Compute the degree of polymerization.
An engineer determines that a 40 cm long rod of 1020 grade steel will be subjected to a tension of 20 kN.
A pitching wedge a golfer is using gives the ball a initial angle of 50 degrees, what range of velocities (Vo) will cause the ball to land within 3 ft of the hole?
405-N rightward force is use to drag a large box across the floor with a constant velocity of 0.678 ms-1. The coefficient of friction between the box and the floor is 0.795. Determine the mass of the box.
A. When the two torques are applied to the composite shaft, determine: the maximum shear stress magnitude in aluminium tube (1), the rotation angle of joint B and c.
If the efficiency of the turbine in converting the mechanical energy given up by the fluid to the turbine shaft is 89% (nt = 0.89), calculate the friction loss in the turbine in J/kg.
a 40 mm diameter hole is drilled 3 m deep into the steel shaft. when the two torque are applied determine a the maximum
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