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
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
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?
The subsequent problems deal with the circuit below
If X=1, Y=1, and Z=1, what is S?
A. uncertain B. 0 C. 1