Computer Programming MCQs

5739 MCQs  (Page 183 of 574)

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Which of the following AC. motors is usually used in large motor-generator sets?
A. Synchronous motor
B. Squirrel cage induction motor
C. Slip ring induction motor
D. Any of the above
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In which of the following equipment direct current is needed ?
A. Telephones
B. Relays
C. Time switches
D. All of the above
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In a mercury arc rectifier positive ions are attracted towards______________?
A. Anode
B. Cathode
C. Shell bottom
D. Mercury pool
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In which of the following appUcations, direct current is absolutely essential ?
A. Illumination
B. Electrolysis
C. Variable speed operation
D. Traction
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In a rotary converter armature currents are______________?
A. D.c. only
B. A.c. only
C. Partly a.c. and partly d.c.
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A rotary converter operates at a______________?
A. Low power factor
B. High power factor
C. Zero power factor
D. None of the above
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Normally, which of the following is used, when a large-scale conversion from AC. to D.C. power is required ?
A. Motor-generator set
B. Motor converter
C. Rotary converter
D. Mercury arc rectifier
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Which of the following metals is generally manufactured by electrolysis process ?
A. Load
B. Aluminium
C. Copper
D. Zinc
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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
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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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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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