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a y-connected synchronous generator rated 100 mva 132 kv has a rated impedance of r 5 and xs 80 per-unit it is
1 a 20000 kva 110138 kv y-d three phase transformer has a series impedance of 002 j008 pu find the per-unit impedance
sketch the per-phase per-unit equivalent circuit of the power system in figure treat each load on the systems as a
a 138 kv 200 mva 60 hz three-phase power transmission line is 100 km long and has the following characteristicsr
the underground cable is now supplying 8 kv to an 800 kva 09 pf lagging single-phase loada what is the sending
1 calculate the dc resistance in ohms per kilometer for an aluminum conductor with a 3 cm diameter2 calculate the
1 calculate the shunt admittance of the line in siemens per km2 the single-phase transmission line is operating
1 the motor described above is connected in shunta what is the no-load speed of this motor when radj 120 omegab
if the motor is connected cumulatively compounded as shown in figure and if radj 175 omega what is its no-load
1 what is the no-load speed of this separately excited motor when radj 175 omega anda va 120 vbva 180 vc va
1 assume that the motor is operating at full load and that the variable resistor radj is again 175 omega if the
1 if the resistor radj is adjusted to 175omega what is the rotational speed of the motor at no-load conditions2
the following information is given about the simple rotating loop shown in figure 8-6b 04 tl 05 mr 025 mvb 48 vr
in this chapter we learned that a step-down autotransformer could be used to reduce the starting current drawn by an
a three-phase 60-hz induction motor runs at 715 rmin at no load and at 670 rmin at full loada how many poles does
a 220-v three-phase six-pole 50-hz induction motor is running at a slip of 35 percent finda the speed of the
a generating station for a power system consists of four 120-mva 15-kv 085-pf-lagging synchronous generators with
two identical 300-kva 480-v synchronous generators are connected in parallel to supply a load the prime movers of the
a paper mill has installed three steam generators boilers to provide process steam and also to use some its waste
three physically identical synchronous generators are operating in parallel they are all rated for a full load of 3 mw
a 100-hp 440-v 08-pf-leading delta-connected synchronous motor has an armature resistance of 022omega and a synchronous
a 208-v y-connected synchronous motor is drawing 50 a at unity power factor from a 208-v power system the field current
1 if a 60-hz synchronous motor is to be operated at 50 hz will its synchronous reactance be the same as at 60 hz or
a 2300-v 2000-hp 08-pf leading 60-hz two-pole y-connected synchronous motor has a synchronous reactance of 15omega and
a 480-v 60 hz 400-hp 08-pf-leading eight-pole delta-connected synchronous motor has a synchronous reactance of 10omega