In the accompanying figure, identify the illustrated thread and explain where it is used.
What will be an ideal response?
The Buttress thread is used where power is to be transmitted in one direction. The load-resisting flank may be inclined from 1° to 5°.
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Form-flowers are flowers with a unique shape
Indicate whether the statement is true or false
The ____ determines the thickness of the metal that can be cut.
A. arc length B. current C. cutting tip diameter D. fuel gas
A 1.8 degrees stepper motor is directly connected to a machine table driven by a lead screw with eight threads per inch. (Note that pitch is the axial distance traveled for one revolution of the screw).
Determine the axial distance traveled by the lead screw when an external input of 4355 pulses is sent to the motor. A separate encoder is connected to the other end of the lead screw. The encoder generates 180 pulses/rev. What will be the number of pulses in the above case? What will be an ideal response?
Water flows through a pipe at an average temperature of T? = 70°C. The inner and outer radii of the pipe are r1 = 6 cm and r2 = 6.5 cm, respectively. The outer surface of the pipe is wrapped with a thin electric heater that consumes 300 W per m length of the pipe. The exposed surface of the heater is heavily insulated so that all heat generated in the heater is transferred to the pipe. Heat is transferred from the inner surface of the pipe to the water by convection with a heat transfer coefficient of h = 85 W/m2•K. Assuming constant thermal conductivity and one-dimensional heat transfer, express the mathematical formulation (the differential equation and the boundary conditions) of the heat conduction in the pipe during steady operation. Do not solve.
