EXAMIANS
In a loaded DC motor, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will
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The squirrel cage induction motors are provided with blades in order to
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In case of IM the torque is
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Ward Leonard control is provides speed control
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The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce
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In which of the following speed control of DC motor the speed obtained is below than the rated speed?
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An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?
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Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:-
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Capacitor fitted with ceiling / table fans is of the value of
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The current drawn by a 220 V DC series motor of armature resistance 0.5 Ω and back emf of 200 V is
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