4-A thyristor of thermal resistance 1.8 C°/W is mounted on a heat sink of thermal resistance 2.0 C/W. The maximum power loss of the thyristor if the junction temperature is not to exceed 125C' in an ambient of 40 C° is: 22.3W 50.8W 30.9W 5-For single phase half-wave controlled rectifier with a freewheeling diode connected across the inductive load, the supply voltage is 220V (RMS). The mean value of the output voltage for a=45 is: 100.7V 70.9V 84.5V

4-A thyristor of thermal resistance 1.8 C°/W is mounted on a heat sink of thermal resistance 2.0 C/W. The maximum power loss of the thyristor if the junction temperature is not to exceed 125C' in an ambient of 40 C° is: 22.3W 50.8W 30.9W 5-For single phase half-wave controlled rectifier with a freewheeling diode connected across the inductive load, the supply voltage is 220V (RMS). The mean value of the output voltage for a=45 is: 100.7V 70.9V 84.5V

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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