The positive and negative sequence impedance of a transmission line are

DGVCL Exam Paper (11-12-2011)
The positive and negative sequence impedance of a transmission line are

Different

Zero

Infinite

Equal

Different

Zero

Infinite

Equal

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

Universal motor

Split phase motor

Capacitor start capacitor run motor

Capacitor start motor

Universal motor

Split phase motor

Capacitor start capacitor run motor

Capacitor start motor

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DGVCL Exam Paper (11-12-2011)
The main advantage of using fractional pitch winding is to refuce

Amount of copper in the winding

Size of the machine

Harmonics in the generated emf

Cost of the machine

Amount of copper in the winding

Size of the machine

Harmonics in the generated emf

Cost of the machine

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

Alarm for both major and minor faults

Tripping for minor faults and alarm for major faults

Tripping for major faults and alarm for minor faults

Tripping for both major and minor faults

Alarm for both major and minor faults

Tripping for minor faults and alarm for major faults

Tripping for major faults and alarm for minor faults

Tripping for both major and minor faults

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DGVCL Exam Paper (11-12-2011)
Bulk power transmission over long HVDC lines are preferred on account of

Minimum line power losses

No harmonic problems

Low cost of HVDC terminals

Simple protection

Minimum line power losses

No harmonic problems

Low cost of HVDC terminals

Simple protection

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DGVCL Exam Paper (11-12-2011)
The transient stability of a power system can be improved by

Increasing the turbine valve opening

Phase shifting transformer

Excitation control

Single pole switching of circuit breakers

Increasing the turbine valve opening

Phase shifting transformer

Excitation control

Single pole switching of circuit breakers

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) The positive and negative sequence impedance of a transmission line are

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

DGVCL Exam Paper (11-12-2011) The main advantage of using fractional pitch winding is to refuce

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

DGVCL Exam Paper (11-12-2011) Bulk power transmission over long HVDC lines are preferred on account of

DGVCL Exam Paper (11-12-2011) The transient stability of a power system can be improved by

DGVCL Exam Paper (11-12-2011)
The positive and negative sequence impedance of a transmission line are

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

DGVCL Exam Paper (11-12-2011)
The main advantage of using fractional pitch winding is to refuce

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

DGVCL Exam Paper (11-12-2011)
Bulk power transmission over long HVDC lines are preferred on account of

DGVCL Exam Paper (11-12-2011)
The transient stability of a power system can be improved by