A. 11 kV
B. 33 kV
C. 66 kV
D. 400 kV
Updated by: The Perfectionist
Related Mcqs:
- In aluminium conductors, steel core is provided to____________?
A. compensate for skin effect
B. neutralise proximity effect
C. reduce line inductance
D. increase the tensile strength - Overhead lines generally use__________________?
A. copper conductors
B. all aluminium conductors
C. A.C.S.R. conductors
D. none of these - For an overhead line, the surge impedance is taken as________________?
A. 20-30 ohms
B. 70—80 ohms
C. 100—200 ohms
D. 500—1000 ohms
E. none of the above - Which of the following materials is used for overhead transmission lines ?
A. Steel cored aluminium
B. Galvanised steel
C. Cadmium copper
D. Any of the above - By which of the following methods string efficiency can be improved?
A. Using a guard ring
B. Grading the insulator
C. Using long cross arm
D. Any of the above
E. None of the above - Constant voltage transmission entails the following disadvantage?
A. large conductor area is required for same power transmission
B. short-circuit current of the system is increased
C. either of the above
D. none of the above - The frequency of voltage generated, in case of generators, can be increased by___________?
A. using reactors
B. increasing the load
C. adjusting the governor
D. reducing the terminal voltage
E. none of the above - Which of the following is the demerit of a ‘constant voltage transmission system’ ?
A. Increase of short-circuit current of the system
B. Availability of steady voltage at all loads at the line terminals
C. Possibility of better protection for the line due to possible use of higher terminal reactants
D. Improvement of power factor at times of moderate and heavy loads
E. Possibility of carrying increased power for a given conductor size in case of long-distance heavy power transmission - Multicore cables generally use________________?
A. square conductors
B. circular conductors
C. rectangular conductors
D. sector-shaped conductors
E. none of the above - A feeder, in a transmission system, feeds power to________________?
A. distributors
B. generating stations
C. service mains
D. all of the above
6 Comments
The answer provided is wrong here , The actual answer of this question is 400 KV because logically if both underground and overhead Transmission lines can handle the same voltage than why not make all the transmission lines underground instead of making them overhead (Which includes of danger of lightening etc too).So as overhead transmission lines can handle more voltage so they are usually preferred.
Thanks for correction. answer updated
you are right. The underground system can not be
operated above 66 kV because of insulation difficulties
but overhead system can be designed for operation up to
400kV.