2-A 4-pole d.c. shunt generator has an armature resistance of 0.018 Q. The armature is lap-wound with 520 conductors. When driven at 750 rev/min the machine produces a total armature current of 400 A at a terminal voltage of 200 V. Calculate the useful fl ux/pole.

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zain IQ
Asiacell
proplem d.c
genera..
->
1-A four pole generator having wave-wound armature winding has
51 slots, each slot containing 20 conductors. What will be the voltage
generated in the machine when driven at 1500 rpm assuming the flux
per pole to be 7.0 mWb ?
2-A 4-pole d.c. shunt generator has an armature resistance of 0.018
Q. The armature is lap-wound with 520 conductors. When driven at
750 rev/min the machine produces a total armature current of 400 A
at a terminal voltage of 200 V. Calculate the useful fl ux/pole.
3-A long shunt compound DC generator delivers a load current of
50A at 500V and has armature, series field and shunt field
resistances of 0.052, 0.032 and 2502 respectively. Calculate the
generated voltage and the armature current. Allow 1V per brush for
contact drop.
4-A long shunt compound DC generator delivers a load current of
150A at 230V and has armature, series field and shunt field
resistances of 0.032N, 0.0152 and 922 respectively. Calculate (i)
induced emf (ii) total power generated and (iii) distribution of this
power.
5-A four pole lap-connected armature of a DC shunt generator is
required to supply the loads connected in parallel: (a) 5kW Geyser at
250 V and (b) 2.5kW lighting load also at 250V. The generator has an
armature resistance 0.22 and a field resistance of 2502. The
armature has 120 conductors in the slots and runs at 1000 rpm.
Allowing 1V per brush for contact drops, find (1) Flux per pole, (2)
armature current per parallel path
Transcribed Image Text:zain IQ Asiacell proplem d.c genera.. -> 1-A four pole generator having wave-wound armature winding has 51 slots, each slot containing 20 conductors. What will be the voltage generated in the machine when driven at 1500 rpm assuming the flux per pole to be 7.0 mWb ? 2-A 4-pole d.c. shunt generator has an armature resistance of 0.018 Q. The armature is lap-wound with 520 conductors. When driven at 750 rev/min the machine produces a total armature current of 400 A at a terminal voltage of 200 V. Calculate the useful fl ux/pole. 3-A long shunt compound DC generator delivers a load current of 50A at 500V and has armature, series field and shunt field resistances of 0.052, 0.032 and 2502 respectively. Calculate the generated voltage and the armature current. Allow 1V per brush for contact drop. 4-A long shunt compound DC generator delivers a load current of 150A at 230V and has armature, series field and shunt field resistances of 0.032N, 0.0152 and 922 respectively. Calculate (i) induced emf (ii) total power generated and (iii) distribution of this power. 5-A four pole lap-connected armature of a DC shunt generator is required to supply the loads connected in parallel: (a) 5kW Geyser at 250 V and (b) 2.5kW lighting load also at 250V. The generator has an armature resistance 0.22 and a field resistance of 2502. The armature has 120 conductors in the slots and runs at 1000 rpm. Allowing 1V per brush for contact drops, find (1) Flux per pole, (2) armature current per parallel path
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