Question # 4 An industrial load consists of: A synchronous motor of 150 h.p. Induction motors aggregating 200 h.p., 0.707 power factor lagging and 82 % efficiency. Lighting load aggregating 30 KW. The tariff is Rs. 100 per annum per KVA maximum demand plus 8 paisa per KWH. Compute the following: Total annual bill when synchronous motor runs with 0.8 power factor lagging and efficiency of 94 %? Total annual bill when synchronous motor runs with 0.8 power factor leading and efficiency of 94 %? Annual saving in cost if synchronous motor is operated at leading power factor?

Question # 4 An industrial load consists of: A synchronous motor of 150 h.p. Induction motors aggregating 200 h.p., 0.707 power factor lagging and 82 % efficiency. Lighting load aggregating 30 KW. The tariff is Rs. 100 per annum per KVA maximum demand plus 8 paisa per KWH. Compute the following: Total annual bill when synchronous motor runs with 0.8 power factor lagging and efficiency of 94 %? Total annual bill when synchronous motor runs with 0.8 power factor leading and efficiency of 94 %? Annual saving in cost if synchronous motor is operated at leading power factor?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.6P

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