Find the Length and Width of a Rectangle That Has

question 34

Multiple Choice

Find the length and width of a rectangle that has perimeter meters and a maximum area.

• A)8 m; 24 m.
• B)1m; 31 m.
• C)16 m; 16 m.
• D)17 m; 15 m.
• E)20 m; 13 m.

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Definitions:

Variable-frequency Drive

A system used to control the speed of an electric motor by varying the frequency and voltage supplied to the electric device.

Motor Controller

A device that regulates the performance of an electric motor by varying parameters such as voltage and current.

PWM

Pulse Width Modulation, a technique used to control the amount of power delivered to an electrical device by varying the duty cycle of a pulse signal.

Four-quadrant

Refers to operating modes of a drive or control system that can handle both positive and negative directions of both power and torque in all four quadrants of operation.