A Best Way To Crack Gorenment Job Exams

Electrical Engineering Objective Questions { Power System }

148. As the height of a transmission tower is altered, the parameter which changes is
A. inductance
B. capacitance
C. conductance
D. none of these
Discuss in Forum

149. The Kelvin's law is limited because which of the following assumption made in it is only partly true?
A. load factor is uniform
B. annual charges are of the form P1 + aP2
C. both (a) and (b) above
D. none of the above
Discuss in Forum

150. In conductor of power transmission line, the voltage gradient is maximum at its
A. centre
B. surface
C. circle with half the radius
D. somewhere between B and C above
Discuss in Forum

151. EHV cables are filled with thin oil under pressure to
A. prevent formation of voids
B. prevent entry of moisture
C. to strengthen the cable conductor
D. to provide insulation
Discuss in Forum

152. Cables in power transmission line are provided with intersheaths to
A. minimize stress
B. minimize high voltage
C. provide uniform stress distribution minimize charging current
Discuss in Forum

153. Impedance and capacitance of a transmission line depend upon
A. current in the line alone
B. voltage in the line alone
C. both A and B
D. physical configuration of conductors in space
Discuss in Forum

154. Capacitance between the two conductors of a single phase two wire line is 0.5 AF/km. The capacitance of each conductor to the neutral will be
A. 0.5 AF/km
B. 0.25 tiF/km
C. 1.0 pF/Icm
D. 2.0 ptF/km
Discuss in Forum

Page 22 of 54

« 20 21  22  2324 »