To secure a flexible duct onto a duct collar, the best fastener would be a(n) ____.
A. sheet metal screw
B. iron wire
C. nylon strap
D. duct tape
Answer: C
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A gear ratio greater than 1:1 is called:
A. Gear reduction B. Overdrive C. Direct drive D. None of the above
Sally is making a sine bar, which is used to machine angles on parts (see Figure 4.19). She has a 1.250 in. thick bar that needs 90° grooves machined into it for precision ground 1.0000 in. diameter cylinders. A sine bar is used by placing different thicknesses under one of the cylinders so that the proper angle is attained. Sally wants the distance between the centers of the cylinders to be 5.000 in.
(a) How deep should she mill the 90° grooves so that the top of the sine block is 2 in. tall?
(b) Once her sine block is finished, she wants to mill a 22.5° angle on a brass block. What thickness of gage blocks will produce this angle for this sine plate?
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Using the stiffness method, analyze the two-span continuous beam shown in Figure P16.1 and draw the shear and moment curves EI is constant.
Using node voltage analysis in the circuit of Figure P3.3, find the voltage v across the 0.25-? resistance.
Find:
Voltages across the resistance, v.