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Electrical Machines
In DC machines shape of net flux density is?
flat tapped or trapezoidal
saddle shape
peaky in nature
sine wave
flat tapped or trapezoidal
saddle shape
peaky in nature
sine wave
Answer
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Related Question
Electrical Machines
The constant losses in transformer is/are
hysteresis loss.
both 2 and 3.
eddy current loss.
copper loss.
hysteresis loss.
both 2 and 3.
eddy current loss.
copper loss.
Answer
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Electrical Machines
A 3 phase stepper motor has 6 stator poles and 4 rotor poles, then find the step angle?
45°
30°
60°
10°
45°
30°
60°
10°
Answer
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Electrical Machines
The armature mmf in a dc machine is 1. stationary with respect to field poles 2. stationary with respect to armature 3. rotating with respect to field poles 4. rotating with respect to armature From these, the correct answer is
1, 3
2, 3
2, 4
1, 4
1, 3
2, 3
2, 4
1, 4
Answer
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Electrical Machines
A differentially compound motor under high-over-load conditions will behave like a / an
AC synchronous motor.
series motor.
cummulative compound motor.
shunt motor.
AC synchronous motor.
series motor.
cummulative compound motor.
shunt motor.
Answer
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Electrical Machines
In which of the following generators negative voltage regulation can occur?
series generators
both B and C
over compound generator
shunt generator
series generators
both B and C
over compound generator
shunt generator
Answer
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