DGVCL Exam Paper (11-12-2011)
In a series RLC circuit at resonance

Current is minimum and power factor is unity
Current is maximum and power factor is unity
Current is maximum and power factor is 0.5
Current is minimum and power factor is 0.5

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

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

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DGVCL Exam Paper (11-12-2011)
An IDMT relay provides

A definite time characteristic for low values of the failt current and an inverse characteristic for high values of the fault current
A definite time cuttent characteristic
An inverse time current characteristic
An inverse characteristic for low values of the fault current and a definite time characteristic for high values of the fault current

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