Ybus used in power flow studies and Zbus used in short circuit studies

DGVCL Exam Paper (11-12-2011)
Ybus used in power flow studies and Zbus used in short circuit studies

Are transpose of each other

Are the same

Have no inter relation

Are inverse of each other

Are transpose of each other

Are the same

Have no inter relation

Are inverse of each other

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DGVCL Exam Paper (11-12-2011)
If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

Over reach

Under reach

Reach

Pick up

Over reach

Under reach

Reach

Pick up

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DGVCL Exam Paper (11-12-2011)
What type of insulator is used if the direction of the transmission line is to be changed?

Strain type

Pin type

Shakle type

Suspebsion type

Strain type

Pin type

Shakle type

Suspebsion type

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

Split phase motor

Universal motor

Capacitor start motor

Capacitor start capacitor run motor

Split phase motor

Universal motor

Capacitor start motor

Capacitor start capacitor run motor

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DGVCL Exam Paper (11-12-2011)
Permittivity is expressed in terms of

Weber /m

farad/sq. m.

Farad/m

N/m

Weber /m

farad/sq. m.

Farad/m

N/m

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

Simple protection

No harmonic problems

Low cost of HVDC terminals

Minimum line power losses

Simple protection

No harmonic problems

Low cost of HVDC terminals

Minimum line power losses

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) Ybus used in power flow studies and Zbus used in short circuit studies

DGVCL Exam Paper (11-12-2011) If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

DGVCL Exam Paper (11-12-2011) What type of insulator is used if the direction of the transmission line is to be changed?

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

DGVCL Exam Paper (11-12-2011) Permittivity is expressed in terms of

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

DGVCL Exam Paper (11-12-2011)
Ybus used in power flow studies and Zbus used in short circuit studies

DGVCL Exam Paper (11-12-2011)
If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

DGVCL Exam Paper (11-12-2011)
What type of insulator is used if the direction of the transmission line is to be changed?

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

DGVCL Exam Paper (11-12-2011)
Permittivity is expressed in terms of

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