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Rolling mills exhibit what type of load torque characteristics?

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Rolling mills exhibit what type of load torque characteristics?

(a) Constant torque characteristics

(b) Linearly rising torque characteristics

(c) Non-Linearly rising torque characteristics

(d) Non-Linearly decreasing torque characteristics

The question was asked in unit test.

This interesting question is from Dynamics topic in division Dynamics of Electrical Drives of Electric Drives

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Right answer is (d) Non-Linearly decreasing torque characteristics

The explanation: Rolling mills are an example of non-linearly decreasing torque characteristics because torque and speed exhibits inversely proportional relationships and power are constant.

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