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Electrical Machines
Which of the following DC motors has almost constant speed over their full load range?
none of these.
Shunt.
Series.
Compound (cummolative).
none of these.
Shunt.
Series.
Compound (cummolative).
Answer
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Related Question
Electrical Machines
Ideal value of voltage regulation of a device is?
a finite negative value
0
∞
a positive finite value
a finite negative value
0
∞
a positive finite value
Answer
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Electrical Machines
The power flow of a dc motor, with respect to a DC generator is
increased.
none of these.
modified.
reversed.
increased.
none of these.
modified.
reversed.
Answer
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Electrical Machines
Which of the following voltage regulator is preferred for providing large values of load current?
Transistor series regulator.
Transistor shunt regulator.
None of these
Zener diode shunt regulator.
Transistor series regulator.
Transistor shunt regulator.
None of these
Zener diode shunt regulator.
Answer
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Electrical Machines
Commutator in DC generator is used for
increase efficiency
collecting of current
reduce losses
convert AC armature current in to DC
increase efficiency
collecting of current
reduce losses
convert AC armature current in to DC
Answer
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Electrical Machines
A dc motor with armature resistance of 0.5 ohms connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is
570 A.
250 A.
340 A.
460 A.
570 A.
250 A.
340 A.
460 A.
Answer
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