Answered: 5. A 6600/400 volts transformer takes…

5. A 6600/400 volts transformer takes 1.5 A current at a power factor of 0.5 on open circuit. Determine the iron loss component current. А. 1.3 А B. 1.5 A С. ЗА D. 0.75 A

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.4MCQ: An ideal transformer has no real or reactive power loss. (a) True (b) False

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Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors. The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.

Question

55.

55. A 6600/400 volts transformer takes 1.5 A current at a power factor
of 0.5 on open circuit. Determine the iron loss component current.
А. 1.3 А
В. 1.5 А
С. ЗА
D. 0.75 A

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