With reference to voltage variation profiles caused by load changes imposed on alternating current generators when starting large motors on line: (a) Sketch a voltage dip, showing an acceptable recovery time (2) (b) State four salient factors that cause the variations in part ‘a’ (4) (c) Outline FOUR salient factors that assist recovery from the deviation shown in part ‘a’ (4)
Generator & circuit protection
UKM Tuticorin 
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