(a) A balanced delta connected load of (10 + j3)N is connected to a 3-phase, 415V,50HZ supply. Draw the circuit diagram, indicating VRN, VRY and all line currents, and from this calculate: (i) (ii) (iii) The 3 load phase currents (IRY, IYB and IBR). The 3 line currents (IR, Iy and IB). The total real power and power factor at the 3 phase supply. b) An unbel
(a) A balanced delta connected load of (10 + j3)N is connected to a 3-phase, 415V,50HZ supply. Draw the circuit diagram, indicating VRN, VRY and all line currents, and from this calculate: (i) (ii) (iii) The 3 load phase currents (IRY, IYB and IBR). The 3 line currents (IR, Iy and IB). The total real power and power factor at the 3 phase supply. b) An unbel
Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Answer b and c?
![Q1 (a) A balanced delta connected load of (10 + j3)N is connected to a 3-phase,
415V,50HZ supply.
Draw the circuit diagram, indicating VRN, VRY and all line currents, and
from this calculate:
(i)
(ii)
(iii)
The 3 load phase currents (IRY, IYB and IBR).
The 3 line currents (IR, Iy and IB).
The total real power and power factor at the 3 phase supply.
An unbalanced 4 wire star connected load consisting of the phase
impedances ZRs (15+j5)N, Zys (10+j0)N and ZBs (18-j6)N is connected to a
3-phase, 440V, 50H7 supply. Draw the circuit diagram ineluding the
implementation of a 2 wattmeter power measurement and from this:
(b)
(i)
(ii)
Calculate the 3 line currents (IR, Iy and IB).
Construct a scaled phasor diagram and using this or otherwise
determine the star/neutral current IsN. Include VRY and VRB on
the phasor diagram.
Calculate the necessary wire diameter for the star/neutral
connection to achieve a current density of 3A/mm².
(ii)
(c)
Determine the total real supply power (W) for Q1(b) based on the 2
wattmeter measurements.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc8545c89-19c2-4d90-bc33-b5c0e87e8b3c%2Fc289ab27-c002-4979-af4f-cc2cd7de8456%2Fwd7ugev_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q1 (a) A balanced delta connected load of (10 + j3)N is connected to a 3-phase,
415V,50HZ supply.
Draw the circuit diagram, indicating VRN, VRY and all line currents, and
from this calculate:
(i)
(ii)
(iii)
The 3 load phase currents (IRY, IYB and IBR).
The 3 line currents (IR, Iy and IB).
The total real power and power factor at the 3 phase supply.
An unbalanced 4 wire star connected load consisting of the phase
impedances ZRs (15+j5)N, Zys (10+j0)N and ZBs (18-j6)N is connected to a
3-phase, 440V, 50H7 supply. Draw the circuit diagram ineluding the
implementation of a 2 wattmeter power measurement and from this:
(b)
(i)
(ii)
Calculate the 3 line currents (IR, Iy and IB).
Construct a scaled phasor diagram and using this or otherwise
determine the star/neutral current IsN. Include VRY and VRB on
the phasor diagram.
Calculate the necessary wire diameter for the star/neutral
connection to achieve a current density of 3A/mm².
(ii)
(c)
Determine the total real supply power (W) for Q1(b) based on the 2
wattmeter measurements.
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