A Best Way To Crack Gorenment Job Exams

Electrical Engineering Objective Questions { Power System }



176. For a 400kV transmission line, the switching over voltage crest in kV is
A.400
B. 400 5
C.825
D.115
Discuss in Forum

177. For a 400 kV transmission line, the number of standard disc used in practice are
A.8
B.12
C.16
D.24
Discuss in Forum

178. Compared to the insulation level of the station equipment, the line insulation is
A. the same
B. greater
C. less
D. not directly related
Discuss in Forum

179. The sag of a transmission line is affected by
A. its own weight and weight of the ice formed
B. temperature and wind condition
C. both (a) and (b) above
D. none of these
Discuss in Forum

180. In a transmission line, the shunt conductance results due to
A. axial current in the conductor
B. radial current in the conductor
C. leakage over the insulator
D. short circuiting of line by the load
Discuss in Forum

181. A three-phase line is spaced at the corner of an equilateral triangle having each side at D and each conductor has GMR of r. The inductance of each conductor in henrys per metre is3D
A. 2 x 10-7 In
B. 2 x 10-7 In ?r?3r
C. 4 x 10-7 In D/r
D. 2 x 10-7 In D/r
Discuss in Forum

182. Are voltage produced in ac circuit breaker is always
A. in phase opposition to the arc current
B. in phase with the arc current
C. leading the arc current by 900
D. lagging the arc current by 45?
Discuss in Forum

Page 26 of 54

« 24 25  26  2728 »