An alternating current, when passed through a resistor immersed in water for 4 minutes, just raised the temperature of the water to boiling point. When a direct current of 4A was passed through the same resistor under identical conditions, it took 8 minutes to boil the water. Find the r.m.s. value of the alternating current. Neglect factors other than heat given to the water. If a rectifier type of ammeter connected in series with the resistor reads 5.2A when the alternating current was flowing, find the form factor of the alternating current.

An alternating current, when passed through a resistor immersed in water for 4 minutes, just raised the temperature of the water to boiling point. When a direct current of 4A was passed through the same resistor under identical conditions, it took 8 minutes to boil the water. Find the r.m.s. value of the alternating current. Neglect factors other than heat given to the water. If a rectifier type of ammeter connected in series with the resistor reads 5.2A when the alternating current was flowing, find the form factor of the alternating current.

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

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.2P: The temperature dependence of resistance is also quantified by the relation R2=R1[ 1+(T2T1) ] where...

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