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Answer Posted / sa
ElCB- Earth Leakage Circuit Breaker
RCCB- Residual Current Circuit Breaker
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ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]
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During regenerative breaking= A rotating magnetic field is reversed B slip is positive C torque is positive D slip is negative
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