This is a machined round surface that is not very deep and is often used to clean up a surface for a washer or bolt head to rest on.

a. counterdrill
b. countersink
c. spotface
d. counterbore


c. spotface

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When a flywheel housing measures out-of-spec while performing flywheel housing concentricity runout measurements, which of the following would represent the minimal level of repair required?

A. Replace the flywheel B. Replace the flywheel housing C. Replace the cylinder block D. Reposition the flywheel housing

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An underwater sonar detects the echo from an object at 100m range. The TOF equals ___ ( x.xx s).

Fill in the blank(s) with the appropriate word(s).

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Do you think that the pH of soil is influenced by agricultural practices such as

tilling and the application of agricultural chemicals? Explain your answer.

What will be an ideal response?

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Fig. 10.132 shows a Wien-bridge network. Show that the frequency at which the phase shift between the input and the output signals is zero is f = 0.5?RC, and that the necessary gain is Av = V?/Vi = 3 at that frequency.

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