When laying out a sheet metal duct section, various tools are used to mark the metal prior to cutting. __________ are used to scratch straight lines on the metal. __________ are used to scratch arced lines and circles on the metal. __________ can be used to scratch freeform and straight lines on the metal surface.

What will be an ideal response?


Scribes
Dividers
Scratch awls

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Fruit trees and flowering shrubs make excellent indoor plants

Indicate whether the statement is true or false

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Today, we recognize the depth and breadth of ____, offering not only the production but inspiring

worldwide distribution of floriculture product.

a. English “hot houses” c. the Hanging Gardens of Babylon b. Renaissance orangeries d. Dutch floriculture

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A PM DC motor with torque constant kPM is used to power a hydraulic pump; the pump is a positive displacement type and generates a flow proportional to the pump velocity: qp = kp?. The fluid travels through a conduit of negligible resistance; an accumulator is included to smooth out the pulsations of the pump. A hydraulic load (modeled by a fluid resistance R) is connected between the pipe and a reservoir (assumed at zero pressure). Sketch the motor-pump circuit. Derive the dynamic equations for the system, and determine the transfer function between motor voltage and the pressure across the load.

What will be an ideal response?

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The subsequent problems deal with the circuit belowIf X=1, Y=1, and Z=1, what is S?

A. uncertain B. 0 C. 1

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