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Electrical Machines
Two DC generators having equal open-circuit emfs but slight different load characteristics are operating in parallel, then
the machine with more drooping characteristic will supply more load.
the machine with more drooping characteristic will supply less load.
the machine will share load equally.
None of these
the machine with more drooping characteristic will supply more load.
the machine with more drooping characteristic will supply less load.
the machine will share load equally.
None of these
Answer
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Related Question
Electrical Machines
A compound motor has
only shunt field winding.
both shunt and series field winding.
only series field winding.
tertiary winding.
only shunt field winding.
both shunt and series field winding.
only series field winding.
tertiary winding.
Answer
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Electrical Machines
The magnetic field which initially induces emf in the armature in a self excited DC generator is because of
permanent magnets.
residual magnetism.
armature reaction.
None of these
permanent magnets.
residual magnetism.
armature reaction.
None of these
Answer
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Electrical Machines
Commonly used starters of cage motor is
None of these
both A and B.
star delta.
DOL.
None of these
both A and B.
star delta.
DOL.
Answer
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Electrical Machines
R1 is the resistance of the primary winding of the transformer. The turn ratio in terms of primary to secondary is K. Then the equivalent resistance of the primary referred to secondary is
K²R1
K×R1
R1 /K
R1 /K²
K²R1
K×R1
R1 /K
R1 /K²
Answer
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Electrical Machines
For a transformer to be tested at full load conditions but consuming only losses from the main, we do
OC and SC tests
back to back test
load test
None of these
OC and SC tests
back to back test
load test
None of these
Answer
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