A.All of the above
B.Self-excited generator
C.Separately excited generator
D.Level compounded generator
Explanation: The correct answer is Level compounded generator.
Submitted by: Academy of Pakistan
D.C. Generators in Electrical Engineering MCQs: 120 practice questions with answer choices and available explanations. Page 5 of 8.
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D.C. Generators
Showing page 5 of 8 · 120 total solved questions available.
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A.total copper loss and mechanical loss
B.iron loss and mechanical loss
C.armature copper loss and iron loss
D.shunt field copper loss and mechanical loss
Explanation: The correct answer is iron loss and mechanical loss.
Submitted by: Academy of Pakistan
A.decrease
B.remain unaffected
C.fluctuate heavily
D.increase
Explanation: The correct answer is decrease.
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A.number of parallel paths
B.number of pole pairs
C.number of commutator segments
D.number of poles
Explanation: The correct answer is number of pole pairs.
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A.magnetic field strength, induced voltage and current
B.magnetic flux, direction of motion and the direction of e.m.f. induced
C.magnetic flux, direction of force and direction of motion of conductor
D.magnetic flux, direction of current flow and resultant force
Explanation: The correct answer is magnetic flux, direction of motion and the direction of e.m.f. induced.
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A.Series generators
B.Compound generators
C.None of the above
D.Shunt generators
Explanation: The correct answer is Shunt generators.
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A.damagnetising the center of all poles
B.demagnetisation of trailing pole tip and magnetisation of leading pole tip
C.magnetising the center of all poles
D.demagnetisation of leading pole tip and magnetisation of trailing pole tip
Explanation: The correct answer is demagnetisation of leading pole tip and magnetisation of trailing pole tip.
Submitted by: Academy of Pakistan
A.Inter pole field
B.Series field
C.Shunt field
D.Compensating field
Explanation: The correct answer is Shunt field.
Submitted by: Academy of Pakistan
A.to support the field coil
B.to reduce the reluctance of the mag¬netic path
C.to spread out the flux to achieve uniform flux density
D.to discharge all the above functions
Explanation: The correct answer is to discharge all the above functions.
Submitted by: Academy of Pakistan
A.number of poles
B.all of the above
C.flux/pole
D.speed of armature
Explanation: The correct answer is speed of armature.
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For the parallel operation of two or more D.C. compound generators, we should ensure that________?
0A.all conditions mentioned above should be satisfied
B.all the series fields should be run in parallel by means of equilizer connection
C.polarity of incoming generator should be same as that of bus bar
D.series fields of all generators should be either on positive side or negative side of the armature
E.voltage of the incoming generator should be same as that of bus bar
Explanation: The correct answer is series fields of all generators should be either on positive side or negative side of the armature.
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A.all the four poles are north poles
B.all the four poles are south poles
C.two north poles follow two south poles
D.alternate poles are north and south
Explanation: The correct answer is alternate poles are north and south.
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A.two
B.half the number of poles
C.same as the number of poles
D.double the number of poles
Explanation: The correct answer is same as the number of poles.
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A.permanent magnets
B.electromagnets
C.none of the above
D.both A. and B.
Explanation: The correct answer is electromagnets.
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A.1% regulation
B.50% regulation
C.infinite regulation
D.100% regulation
Explanation: The correct answer is 1% regulation.
Submitted by: Academy of Pakistan