Dc Machines Campus Interviews Online Exam Quiz
Dc Machines Campus Interviews GK Quiz. Question and Answers related to Dc Machines Campus Interviews. MCQ (Multiple Choice Questions with answers about Dc Machines Campus Interviews
In voltage commutation, in chopper circuit we use _____________
Options
A : 2 auxiliary thyristors
B : 2 diodes
C : 1 auxiliary thyristor
D : Many diodes
In current commutation, in chopper circuit we use _____________
Options
A : 2 auxiliary thyristors
B : 2 diodes
C : 1 auxiliary thyristor
D : 2 auxiliary thyristors and 2 diodes
How output voltage of chopper can be varied?
Options
A : By using constant frequency system
B : By using variable frequency system
C : By using constant and variable frequency systems
D : By using constant or variable frequency systems
Which of the following statement is not true regarding to DC chopper?
Options
A : Cheap
B : Fast response
C : Regeneration
D : AC to DC control
Which of the following method is employed when regenerative braking is necessary?
Options
A : DC chopper
B : Variable resistor
C : Inverter rectifier
D : Motor-generator
Which of the following method is adopted for controlling a DC motor?
Options
A : Resistance control
B : Motor-generator set
C : Inverter Rectifier
D : DC chopper
Which of the following correctly suits with chopper?
Options
A : Thyristor in series with load
B : Thyristor in parallel with load
C : Thyristor switch in series with load
D : Thyristor switch in parallel with load
What is the formula for step up chopper?
Options
A : V(1-?)
B : V/(1-?)
C : ?V
D : v/?
Which of the following is not the method of auxiliary commutation?
Options
A : Voltage commutation
B : Resistance commutation
C : Current commutation
D : Load commutation
The average value of chopper output waveform is given by _____________
Options
A : ?V
B : V/?
C : ?2V
D : V/?2
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