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Electrical Machines
A belt-driven cumulatively-compound dc generator is delivering power to the dc mains. If the Belt snaps then the machine will run as a
cumulative compounded motor in the same direction
cumulative compounded motor in opposite direction
differentially compounded motor in the same direction
differentially compounded motor in the opposite direction
cumulative compounded motor in the same direction
cumulative compounded motor in opposite direction
differentially compounded motor in the same direction
differentially compounded motor in the opposite direction
Answer
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Related Question
Electrical Machines
A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point.
44.47 Amp.
33.33 Amp.
29 Amp.
43 Amp.
44.47 Amp.
33.33 Amp.
29 Amp.
43 Amp.
Answer
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Electrical Machines
In auto transformer if the turn ratio is K, what is the power transferred inductively?
(1-K) × input power
both A and B
None of these
K × input power
(1-K) × input power
both A and B
None of these
K × input power
Answer
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Electrical Machines
The power developed by salient pole synchronous machine is/are
excitation power only
power due to saliency or reluctance only
None of these
both 1 and 2
excitation power only
power due to saliency or reluctance only
None of these
both 1 and 2
Answer
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Electrical Machines
In travelling cranes for crane travel, trolley and boom hoist which motor is preferred?
Synchronous motor.
Slip ring induction motor.
Stepper motor.
DC differential compound motor.
Synchronous motor.
Slip ring induction motor.
Stepper motor.
DC differential compound motor.
Answer
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Electrical Machines
Poles of DC machine are often laminated to
reduce armature reaction.
dissipate more heat.
reduce pulsation loss.
reduce iron weight.
reduce armature reaction.
dissipate more heat.
reduce pulsation loss.
reduce iron weight.
Answer
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