Page No. 292
The armature voltage control of D.C. motor provides_____________?
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The plugging gives the____________?
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For a D.C. shunt motor if the excitation is changed_______________?
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Which motor has the poorest speed control?
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If I2 be the armature current, then speed of a D.C. shunt motor is_______________?
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The speed of a D.C. shunt motor can be increased by_______________?
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Usually wide and sensitive speed control is desired in case of____________?
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Which of the following method of speed control of D.C. machine will offer minimum efficiency ?
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