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Rectifiers and Converters

Which of the following methods may be used to convert A.C. system to D.C ?

August 11, 2021December 16, 2018 by admin
Which of the following methods may be used to convert A.C. system to D.C ?

A. Rectifiers
B. Motor converters
C. Motor-generator sets
D. Rotary converters
E. All of the above

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A synchronous converter can be started______________?

August 11, 2021December 16, 2018 by admin
A synchronous converter can be started______________?

A. by means of a small auxiliary motor
B. from AC. side as induction motor
C. from D.C. side as D.C. motor
D. any of the above methods
E. none of the above methods

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Which of the following are the applications of D.C. system ?

August 11, 2021December 16, 2018 by admin
Which of the following are the applications of D.C. system ?

A. Battery charging work
B. Arc welding
C. Electrolytic and electro-chemical processes
D. Arc lamps for search lights
E. All of the above

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In a single phase rotary converter the number of slip rings will be_____________?

August 11, 2021December 16, 2018 by admin
In a single phase rotary converter the number of slip rings will be_____________?

A. two
B. three
C. four
D. six
E. none

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A rotary converter combines the function of____________?

August 11, 2021December 16, 2018 by admin
A rotary converter combines the function of____________?

A. an induction motor and a D.C. generator
B. a synchronous motor and a D.C. generator
C. a D.C. series motor and a D.C. generator
D. none of the above

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With a motor converter it is possible to obtain D.C. voltage only upto__________?

August 11, 2021December 16, 2018 by admin
With a motor converter it is possible to obtain D.C. voltage only upto__________?

A. 200-100 V
B. 600—800 V
C. 1000—1200 V
D. 1700—2000 V

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Which of the following is reversible in action ?

August 11, 2021December 16, 2018 by admin
Which of the following is reversible in action ?

A. Motor generator set
B. Motor converter
C. Rotary converter
D. Any of the above
E. None of the above

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A rotary converter is a single machine with______________?

August 11, 2021December 16, 2018 by admin
A rotary converter is a single machine with______________?

A. one armature and one field
B. two armatures and one field
C. one armature and two fields
D. none of the above

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A rotary converter in general construction and design, is more or less like___________?

August 11, 2021December 16, 2018 by admin
A rotary converter in general construction and design, is more or less like___________?

A. a transformer
B. an induction motor
C. an alternator
D. any D.C. machine

Categories Rectifiers and Converters Leave a comment

Which of the following metals is generally manufactured by electrolysis process ?

August 11, 2021December 16, 2018 by admin
Which of the following metals is generally manufactured by electrolysis process ?

A. Load
B. Aluminium
C. Copper
D. Zinc
E. None of the above

Categories Rectifiers and Converters Leave a comment
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