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

Have no inter relation

Are inverse of each other

Are the same

Are transpose of each other

Have no inter relation

Are inverse of each other

Are the same

Are transpose of each other

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DGVCL Exam Paper (11-12-2011)
A fixed step by step procedure for finding the solution of a problem on computer is called

Logic

Hardware

Software

Algorithm

Logic

Hardware

Software

Algorithm

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DGVCL Exam Paper (11-12-2011)
In a power plant, a reserve generating capacity which is not in service but is in operation is known as

Cold reserve

Firm power

Hot reserve

Spinning reserve

Cold reserve

Firm power

Hot reserve

Spinning reserve

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DGVCL Exam Paper (11-12-2011)
The purpose of providing a choke in a tube light is

To eliminate corona effect

To avoid radio interference

To improve the power factor

To limit the current to an appropriate value

To eliminate corona effect

To avoid radio interference

To improve the power factor

To limit the current to an appropriate value

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DGVCL Exam Paper (11-12-2011)
In the protection of transformers, harmonic restraint is used to guard against

Unbalanced protection

Magnetizing inrush current

Lightning

Switching over voltages

Unbalanced protection

Magnetizing inrush current

Lightning

Switching over voltages

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

Universal motor

Capacitor start motor

Split phase motor

Capacitor start capacitor run motor

Universal motor

Capacitor start motor

Split phase motor

Capacitor start capacitor run motor

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