EXAMIANS
For higher values of armature, the speed of a DC series motor is
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If the source voltage of a DC motor is increased, which of the following will decrease?
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When Flemings right hand rule to find the direction of induced emf, the thumb points towards
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When a short circuit test on a transformer is performed at 25 V, 50 Hz, the drawn current is I1. If the test is performed by 25 V and 25 Hz and power drawn current is I2, then
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In case of DC Shunt Motor, the speed will____ if the voltage increases, neglecting armature saturation.
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If the applied voltage of a certain transformer is increased by 50% and the frequency is reduced by 50%, the maximum flux density will (assuming that the magnetic circuit remains unsaturated)
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Which of the following is not a necessary condition to be satisfied for synchronising an incoming alternator to an already operating alternator?
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Why are capacitors used with large AC induction motor?
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In a dc generator operating on load with its brushes on the geometrical neutral axis (GNA), the magnetic neutral axis (MNA) is shifted in the direction of rotation. Now, if the brushes are given a lead of 90° (electrical), then the MNA will
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A simple method of increasing the voltage of a DC generator is to
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