DGVCL Exam Paper (11-12-2011)
Buchholz relay causes

Alarm for both major and minor faults
Tripping for major faults and alarm for minor faults
Tripping for both major and minor faults
Tripping for minor faults and alarm for major faults

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DGVCL Exam Paper (11-12-2011)
The corona effect can be minimized by increasing

Diameter of the conductor
Both spacing between the conductors and diameter of the conductor
Spacing between the conductors
The length of the conductor

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DGVCL Exam Paper (11-12-2011)
The motor used in celling fans is

Capacitor start motor
Split phase motor
Universal motor
Capacitor start capacitor run motor

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