Dc Machines Graphical Representation External Characteristics Online Exam Quiz
Dc Machines Graphical Representation External Characteristics GK Quiz. Question and Answers related to Dc Machines Graphical Representation External Characteristics. MCQ (Multiple Choice Questions with answers about Dc Machines Graphical Representation External Characteristics
Rf line intersects with OCC in ________
Options
A : 1st quadrant
B : 2nd quadrant
C : 3rd quadrant
D : 4th quadrant
External characteristics of DC shunt motor lies in ______________
Options
A : 1st quadrant
B : 2nd quadrant
C : 1st and 2nd quadrant
D : 4th quadrant
From magnetization characteristic at If = 7.1 A, Ea = 225 V at 1000 rpm. What will be the terminal voltage at speed 950 rpm?
Options
A : 225 V
B : 235 V
C : 214 V
D : 220 V
For a given compound DC machine, Net field current obtained from characteristic is equal to 7.5 A, where shunt field current is equal to 5 A, armature current is 505 A, demagnetizing current equal to 0.95 A and shunt field winding of 1000 turns at rated speed of 1000 rpm. What will be the series field turns?
Options
A : 7
B : 8
C : 5
D : 9
How armature resistance effect is shown graphically?
Options
A : By adding IaRa product horizontally with Rf line
B : By subtracting IaRa product vertically with Rf line
C : By adding IaRa product vertically with Rf line
D : By subtracting IaRa product horizontally with Rf line
How demagnetization effect of armature reaction is shown graphically?
Options
A : By shifting origin towards +ve y axis
B : By shifting origin towards +ve x axis
C : By shifting origin towards -ve y axis
D : By shifting origin towards -ve x axis
For determining IaRa maximum _____________
Options
A : Distance between Rf line and v+ IaRa line is taken
B : Distance between OCC and v+ IaRa line is taken
C : Maximum Distance between OCC and v+ IaRa line is taken
D : Can’t calculated graphically
No load point of DC generator is __________
Options
A : Intersection of OCC and Rf line
B : Point on the Y axis at rated field current
C : Point on the X axis at rated terminal voltage
D : Can’t find through graphical interpretation
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