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POWER SYSTEMS

Power Systems
The fact that current density is higher at the surface when compared to centre is known as

 proximity effect
 skin effect
All of these
 carona

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Power Systems
The presence of earth in case of overhead lines

 increase capacitance
 increase inductance
 decrease inducatance
 decrease capacitance

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Power Systems
The term self GMD is used to calculate

 inductance
 resistance
 capacitance
 both 1 and 2

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Power Systems
Inductance of transmission line will decrease when

 both GMD and GMR increase
 both GMD and GMR decrease
 GMD increase and GMR decrease
 GMD decrease and GMR increase

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Power Systems
If we increase the spacing between the phase conductors, the line capacitance

 increases
None of these
 decreases
 remains unaffected

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