In carrier current protection, the purpose of the wave trap is for

DGVCL Exam Paper (11-12-2011)
In carrier current protection, the purpose of the wave trap is for

Tripping fault current

Trapping high frequency waves entering into generator/transformer unit.

Trapping power frequency waves

All of these

Tripping fault current

Trapping high frequency waves entering into generator/transformer unit.

Trapping power frequency waves

All of these

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DGVCL Exam Paper (11-12-2011)
First zone distance relay protects the transmission line section upto

50 % of its full length

80 % of its full length

25 % of its full length

Its full length

50 % of its full length

80 % of its full length

25 % of its full length

Its full length

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

Split phase motor

Capacitor start motor

Universal motor

Capacitor start capacitor run motor

Split phase motor

Capacitor start motor

Universal motor

Capacitor start capacitor run motor

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DGVCL Exam Paper (11-12-2011)
The bus bar zone faults are generally

Three phase short ciruits

Double line to ground faults

Single line to ground faults

Phase to phase faults

Three phase short ciruits

Double line to ground faults

Single line to ground faults

Phase to phase faults

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DGVCL Exam Paper (11-12-2011)
Under operating conditions, the secondary of a current transformer is always short ciruited because

It is safe to human beings

It protects the primary ciruits

It protects the secondary ciruits

It avoids core saturation and high voltage induction

It is safe to human beings

It protects the primary ciruits

It protects the secondary ciruits

It avoids core saturation and high voltage induction

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DGVCL Exam Paper (11-12-2011)
If the percentage reactance of the system upto the point of fault is 20% and the base kVA is 10,000 the short ciruit kVA is

60 MVA

20 MVA

10 MVA

50 MVA

60 MVA

20 MVA

10 MVA

50 MVA

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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) In carrier current protection, the purpose of the wave trap is for

DGVCL Exam Paper (11-12-2011) First zone distance relay protects the transmission line section upto

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

DGVCL Exam Paper (11-12-2011) The bus bar zone faults are generally

DGVCL Exam Paper (11-12-2011) Under operating conditions, the secondary of a current transformer is always short ciruited because

DGVCL Exam Paper (11-12-2011) If the percentage reactance of the system upto the point of fault is 20% and the base kVA is 10,000 the short ciruit kVA is

DGVCL Exam Paper (11-12-2011)
In carrier current protection, the purpose of the wave trap is for

DGVCL Exam Paper (11-12-2011)
First zone distance relay protects the transmission line section upto

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

DGVCL Exam Paper (11-12-2011)
The bus bar zone faults are generally

DGVCL Exam Paper (11-12-2011)
Under operating conditions, the secondary of a current transformer is always short ciruited because

DGVCL Exam Paper (11-12-2011)
If the percentage reactance of the system upto the point of fault is 20% and the base kVA is 10,000 the short ciruit kVA is