Which of the following risers are more prone to breakage from traffic over the surface of a lawn?

a. swing ell
b. nipple
c. funny pipe


b. nipple

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What is a symmetry tolerance?

What will be an ideal response?

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The existing culverts identified on the plan are made of ______ and cross under the

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

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What are the most important considerations in planning a pond?

What will be an ideal response?

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Determine the transfer functions from input voltage to angular velocity and from load torque to angular velocity for a PM DC motor rigidly connected to an inertial load. Assume resistance and inductance parameters Ra , La let the armature constant be ka . Assume ideal energy conversion, so that ka = kT . The motor has inertia Jm and damping coefficient bm, and it is rigidly connected to an inertial load with inertia J and damping coefficient b. The load torque TL acts on the load to oppose the magnetic torque.

Find: Transfer functions from armature voltage to angular velocity and from load torque to angular velocity. Schematics, diagrams, circuits and given data.

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