A. lead
B. paper
C. rubber
D. none of the above
Transmission and Distribution
The square root of the ratio of line impedance and shunt admittance is called the___________?
A. surge impedance of the line
B. conductance of the line
C. regulation of the line
D. none of the above
The phenomenon qf rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the________________?
A. Seeback effect
B. Ferranti effect
C. Raman effect
D. none of the above
Owing to skin effect:
A. current flows through the half cross-section of the conductor
B. portion of the conductor near the surface carries more current and core of the conductor carries less current
C. portion of the conductor near the surface carries less current and core of the conductor carries more cur¬rent
D. any of the above
E. none of the above
When a conductor carries more current on the surface as compared to core, it is due to___________?
A. permeability variation
B. corona
C. skin effect
D. unsymmetrical fault
E. none of the above
A 3-phase 4 wire system is commonly used on________________?
A. primary transmission
B. secondary transmission
C. primary distribution
D. secondary distribution
The power factor of industrial loads is generally______________?
A. unity
B. lagging
C. leading
D. zero
Galvanised steel wire is generally used as______________?
A. stay wire
B. earth wire
C. structural components
D. all of the above
The voltage of the single phase supply to residential consumers is_____________?
A. 110 V
B. 210 V
C. 230 V
D. 400 V
A conductor, due to sag between two supports, takes the form of____________?
A. semi-circle
B. triangle
C. ellipse
D. catenary
