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Electrical Machines
A 8-pole, DC generator has a simplex wave-wound armature containing 32 coils of 6 turns each. Its flux per pole is 0.06 Wb. The machine is running at 250 rpm. The induced armature voltage is
96 V
768 V
384 V
192 V
96 V
768 V
384 V
192 V
Answer
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Related Question
Electrical Machines
What are slot wedges in a DC machine made of?
Mild steel.
Cast iron.
Fibre.
Silicon steel.
Mild steel.
Cast iron.
Fibre.
Silicon steel.
Answer
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Electrical Machines
Skewing of cage rotors offers the following advantages
all of below.
locking tendency is reduced.
uniform torque.
less noise.
all of below.
locking tendency is reduced.
uniform torque.
less noise.
Answer
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Electrical Machines
Considering a galvanometer is connected to the rotor of a 3 - Φ, 4 pole, 50 Hz IM and is making 130 oscillations in a minute, then calculate the rotor speed?
1500.
1440.
1435.
1450.
1500.
1440.
1435.
1450.
Answer
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Electrical Machines
A DC generator beyond critical resistance will generate
maximum current.
maximum voltage.
no voltage.
maximum power.
maximum current.
maximum voltage.
no voltage.
maximum power.
Answer
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Electrical Machines
A generator may loose residual magnetism due to
any of these.
heating.
over excitation.
vibrations.
any of these.
heating.
over excitation.
vibrations.
Answer
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