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MCQ-Set-5-Power systems

Electrical engineering
MCQ related to Power system Design and planing
Set : 5

41.Full foirm of self GMD is......




... Answer is A)
Geometrical mean distance



42. What is self GMD for solid round conductor of radius 'R'




... Answer is B)
0.7788R



43. For 180° phase displacement which connection is used ?




... Answer is A)
Yy6, Dd6



44. .... insulation use for more than 180°C.




... Answer is C)
C type insulation is use for above 180°C



45. Not use for insulation measument.




... Answer is C)
ohm meter



46. If ten delta is quite low it means.....




... Answer is A)
good insulation



47. Geometrical mean of the distance from one conductor to other is called ........




... Answer is B)
Mutual GMD



48. GMR depend on ........




... Answer is C)
both



49. by using Circle diagram we can find.....




... Answer is D)
All



50. Dielectric strength of good insulating oil is ?




... Answer is C)
40kV/mm



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