Q. Which of the following method will not give many speed values for a DC series motor?

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Q. In series-parallel speed control method ______________

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Q. Where diverters are used?

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Q. What will happen to the speed of a series motor if the temperature of armature resistance is increased?

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Q. For which speed control method we get minimum efficiency?

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Q. The speed of a DC motor can be varied by changing ______________

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Q. For constant torque drive which of the following speed control method is preferred?

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Q. When the armature of a DC motor rotates, emf induced is in machine is called as ___________

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Q. Which of the following method is used for DC motor with 12+ HP requiring frequent start, stop, speed reversal?

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Q. Flux density distribution is distorted by armature control method.

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Q. In rheostatic series control method of armature we add ____________

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Q. By series armature resistance method, we can get _________________________

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Q. Consider the armature control method, where 10 Ω resistance is connected in series with armature in first case. For second case resistance value is changed 100 Ω. Then ____________

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Q. Speed regulation of armature series control method is __________

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Q. In shunted rheostatic armature control method ______________

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Q. Which of the following is correct statement?

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Q. By series parallel method of armature control how many different speeds are possible?

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Q. Which method is best for series traction motors?

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Q. Ward Leonard method is ___________

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Q. Which of the following component is not used in Ward Leonard method?

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