A 3 phase induction motor operating at rated power can be represented by a balanced delta connected load (ZRY etc) of (3G7 + jl0) N and is connected to a 3 phase, 4G65 V and 50 Hz supply. (a) Calculate: (i) The three load phase currents (IRY, IYB and IBr). (ii) The three line currents (IR, Iy and IB). The real power (W) in each phase of the load different methods to calculate this. (iii) using 2

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A 3 phase induction motor operating at rated power can be represented by a
balanced delta connected load (ZRY etc) of (3G7 + j10) 2 and is connected to
a 3 phase, 4G65 V and 50 Hz supply.
(a)
Calculate:
(i)
The three load phase currents (IRY, IYB and IBR).
(ii)
The three line currents (IR, Iy and IB).
The real power (W) in each phase of the load - using 2
different methods to calculate this.
(iii)
(iv)
The real power (W) supplied by each of the supply phases.
(v)
The total real power (W) from the supply if the induction
motor is star connected.
Transcribed Image Text:A 3 phase induction motor operating at rated power can be represented by a balanced delta connected load (ZRY etc) of (3G7 + j10) 2 and is connected to a 3 phase, 4G65 V and 50 Hz supply. (a) Calculate: (i) The three load phase currents (IRY, IYB and IBR). (ii) The three line currents (IR, Iy and IB). The real power (W) in each phase of the load - using 2 different methods to calculate this. (iii) (iv) The real power (W) supplied by each of the supply phases. (v) The total real power (W) from the supply if the induction motor is star connected.
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