1. Three equal impedances each having a resistance of g and inductance of 52 mH are connected in Delta to a 415, 3- phase 50Hz system. Calculate line current, phase current and power consumed.

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
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.23P: A single-phase source has a terminal voltage V=1200volts and a currentI=1530, which leaves the...
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1. Three equal impedances each having a resistance of gl and inductance of 52 mH are connected in Delta to a 415, 3-
phase 50Hz system. Calculate line current, phase current and power consumed.
2. When the two-wattmeter method is used to measure the input power of a balanced load, the readings on the wattmeters
are 6 kW and 8 kW, the connections to one of the coils on the meter reading 8 kW have to be reversed. Determine (a) the
total input power, and (b) the load power factor.
3. A 5.5 kVA, 1600 V/100 V, 50 Hz, single-phase transformer has 42 secondary windings. Calculate
(a) the primary and secondary current, (b) the number of primary turns and (c) the maximum value of the flux.
Transcribed Image Text:1. Three equal impedances each having a resistance of gl and inductance of 52 mH are connected in Delta to a 415, 3- phase 50Hz system. Calculate line current, phase current and power consumed. 2. When the two-wattmeter method is used to measure the input power of a balanced load, the readings on the wattmeters are 6 kW and 8 kW, the connections to one of the coils on the meter reading 8 kW have to be reversed. Determine (a) the total input power, and (b) the load power factor. 3. A 5.5 kVA, 1600 V/100 V, 50 Hz, single-phase transformer has 42 secondary windings. Calculate (a) the primary and secondary current, (b) the number of primary turns and (c) the maximum value of the flux.
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