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ELECTRICAL MACHINES QUIZ

Diverters are used only in

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Which type motors are preferred for lathes?

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Which of the following is/are the methods to reduce the armature reaction and its effects?

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Series field consists of--------number of turns and ---------- conductors respectively

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In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs

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A short-shunt cumulatively-compounded dc generator builds up a voltage of 220 V at no load at rated speed. If it is operated as a differentially compounded generator, other things remaining the same, it would build up

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In which of the following generators negative voltage regulation can occur?

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In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve

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In a step down transformer which one of the following statements is true?

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When applied rated voltage per phase is reduce to one half, the starting torque of three phase squirrel cage induction motor becomes

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