DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
A Transformer _____

Steps up or down AC Voltages & Current

Changes DC to AC

Steps up or down DC Voltages & Current

Changes AC to DC

Steps up or down AC Voltages & Current

Changes DC to AC

Steps up or down DC Voltages & Current

Changes AC to DC

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DGVCL Exam Paper (12-06-2016)
The following is correct :

P = I²xR

All of these

P = V²/R

P = VxI

P = I²xR

All of these

P = V²/R

P = VxI

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DGVCL Exam Paper (12-06-2016)
_____ electric power is the most common method used by electrical grids to transfer power

One-phase

None of these

Two-phase

Three-phase

One-phase

None of these

Two-phase

Three-phase

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DGVCL Exam Paper (12-06-2016)
In a transmission line if booster transformers are to be used, preferred location will be

At the sending end

Anywhere in the line

At the intermediate point

At the receiving end

At the sending end

Anywhere in the line

At the intermediate point

At the receiving end

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DGVCL Exam Paper (12-06-2016)
A Step Up transformer :

Steps up the level of Voltage

(a) and (b) only

Steps down the level of current

Step up the level of Frequency

Steps up the level of Voltage

(a) and (b) only

Steps down the level of current

Step up the level of Frequency

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DGVCL Exam Paper (12-06-2016)
Transformer has _____

Primary winding and secondary winding

Auxiliary winding and secondary winding

None of these

Primary winding and Auxiliary winding

Primary winding and secondary winding

Auxiliary winding and secondary winding

None of these

Primary winding and Auxiliary winding

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