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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
About how many times longer would a 10 watt light bulb be able to burn compared to a 100 watt bulb with the same energy?

10 times longer
100 times longer
None of these
Same time

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DGVCL Exam Paper (12-06-2016)
The following is a Distribution Company:

MGVCL
GERC
CSERC
DERC

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DGVCL Exam Paper (12-06-2016)
Capacitance is the ability of a body to store an _____

electric current
voltage
All of these
electrical charge

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DGVCL Exam Paper (12-06-2016)
The transformer works on the principle of:

All of these
None of these
Mutual capacitance
Mutual induction

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Transformer is static device.
two or more stationary electrical circuit mutually linked by magnetic circuit.
assumptions of ideal transformer:
1. there are no losses.
2. whole magnetic flux constant no leakage.
3. permeability of core is infinite.

DGVCL Exam Paper (12-06-2016)
The voltage of transmission can be regulated by

Any of the above methods
Use of capacitors to neutralize the effect of series reactance
Use of tap changing transformers
Switching in shunt capacitors at the receiving end during heavy loads

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DGVCL Exam Paper (12-06-2016)
The main disadvantages of having poor power factors are:

All of these
Poor voltage regulation
High cost of station and distribution equipment
High energy loss in conductor

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