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Air enters a pipe at 25 Celsius, 100 kPa at a flow rate of 36 m3/hr. A heater on the outside of the pipe draws 8 amps at a voltage of 120 V. All the heat from the heater is transferred to the air (well insulated and wall t is small). Assuming that the air behaves as an ideal gas and ignoring KE and PE, (a) determine the mass flow rate of the air in kg/s and (b) the temperature of the air at the exit.
A cylinder fitted with a piston contains air at 1 Mpa pressure and 300 C temperature, at which point the volume is 0.2^3. The total external force acting on the piston is prop
A shredder is to reduce the particle size of 80% passing 10 cm to 80% passing 2 cm at a solids flow rate of 10 tonnes (10,000 kg) per hour. Size the motor for this shredder.
The volumetric analysis of a mixture of a mixture of gases is 30 percent oxygen, 40 percent nitrogen 10 percent dioxide, 20 percent methane. This mixture flows through a 1-in-
The concrete walls and roof of a garage are 15-cm thick. The inside dimensions of the garage are 8-m long, 6-m wide, and 2.5-m high. The door is made of 12-mm thick hardwood a
If the pipe is to be insulated with glass wool insulation (k=.05 W/m C) in order to decrease the temperature rise of water to .25 degrees C, determine the required thickness
When the gear rotates 20 revolutions, it achieves an angular velocity of v = 30 rad>s, starting from rest. Determine its constant angular acceleration and the time required.
Where θr is the electrical rotor position Determine a set of qd flux linkage equations that are rotor position invariant. To do this, you will need to establish a suitable r
Define prying action? Sketch an alternative joint diagram showing the effects of prying action Name at least two things the joint designer can do to reduce prying action?
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