All the peripheral devices connected to a computer require power to work. Which of the following voltages is required for the motherboard to work?

DGVCL Exam Paper (11-12-2011)
All the peripheral devices connected to a computer require power to work. Which of the following voltages is required for the motherboard to work?

Negative cycle of sine wave

AC

Positive cycle of sine wave

DC

Negative cycle of sine wave

AC

Positive cycle of sine wave

DC

ANSWER DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
If the excitation of a synchronous generator fails, it acts as a

Induction motor

Synchronous motor

Induction generator

Synchronous generator

Induction motor

Synchronous motor

Induction generator

Synchronous generator

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
The mutual inductance between two unity coupled coils of 9 H and 4 H is

6 H

2.2 H

13 H

36 H

6 H

2.2 H

13 H

36 H

ANSWER DOWNLOAD EXAMIANS APP

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

It avoids core saturation and high voltage induction

It is safe to human beings

It protects the secondary ciruits

It protects the primary ciruits

It avoids core saturation and high voltage induction

It is safe to human beings

It protects the secondary ciruits

It protects the primary ciruits

ANSWER DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
The purpose of embedding the damper winding in the pole face of a synchronous motor is to

Eliminate losses on account of fair friction

Reduce bearing friction

Eliminate hunting and provide adequate starting torque

Reduce winding losses

Eliminate losses on account of fair friction

Reduce bearing friction

Eliminate hunting and provide adequate starting torque

Reduce winding losses

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

Are transpose of each other

Have no inter relation

Are the same

Are inverse of each other

Are transpose of each other

Have no inter relation

Are the same

Are inverse of each other

ANSWER DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011) All the peripheral devices connected to a computer require power to work. Which of the following voltages is required for the motherboard to work?

DGVCL Exam Paper (11-12-2011) If the excitation of a synchronous generator fails, it acts as a

DGVCL Exam Paper (11-12-2011) The mutual inductance between two unity coupled coils of 9 H and 4 H is

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) The purpose of embedding the damper winding in the pole face of a synchronous motor is to

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)
All the peripheral devices connected to a computer require power to work. Which of the following voltages is required for the motherboard to work?

DGVCL Exam Paper (11-12-2011)
If the excitation of a synchronous generator fails, it acts as a

DGVCL Exam Paper (11-12-2011)
The mutual inductance between two unity coupled coils of 9 H and 4 H is

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)
The purpose of embedding the damper winding in the pole face of a synchronous motor is to

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