In the Absence of Cutoff, How Does a River Meander

question 35

Multiple Choice

In the absence of cutoff, how does a river meander loop behave over time?

• A) The gradient is raised as the loop shortens, and the channel migrates away from the cut or outer bank of the loop.
• B) The gradient is lowered as the channel lengthens and migrates toward the cut or outer bank of the loop.
• C) The gradient is lowered as the loop shortens, and the channel migrates toward the shallow inner bank of the loop.
• D) The gradient is raised as the loop lengthens, and the channel migrates toward the cut or inner bank of the loop.

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Definitions:

Wound Armature

A component in electrical machines consisting of coils wound around an iron core, which rotates in a magnetic field to induce electromotive force.

Brushes

Sliding contacts, generally made of carbon, used to provide connection to rotating parts of machines.

Field Winding

The winding of a coil around an electromagnet's core, which creates a magnetic field when an electric current passes through it.

Armature

The rotating part of an electric generator or motor that interacts with the magnetic field to produce electrical power or mechanical torque.