A. 6.6 kV (r.m.s. value)/cm
B. 11 kV (r.m.s. value)/cm
C. 22 kV (maximum value)/cm
D. 30 kV (maximum value)/cm
Related Mcqs:
- A conductor, due to sag between two supports, takes the form of____________?
A. semi-circle
B. triangle
C. ellipse
D. catenary - 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 - The skin effect of a conductor will reduce as the__________?
A. resistivity of conductor material increases
B. permeability of conductor material increases
C. diameter increases
D. frequency increases - When a live conductor of public electric supply breaks down and touches the earth which of the following will happen?
A. Current will flow to earth
B. Supply voltage will drop
C. Supply voltage will increase
D. No current will flow in the conductor
E. None of the above - If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as___________________?
A. Kelvin’s law
B. Ohm’s law
C. Kirchhoffs law
D. Faraday’s law
E. none of the above - Which of the following is usually not the generating voltage ?
A. 6.6 kV
B. 8.8 kV
C. 11 kV
D. 13.2 kV - The steel used in steel cored conductors is usually__________?
A. alloy steel
B. stainless steel
C. mild steel
D. high speed steel
E. all of the above - Electro-mechanical voltage regulators are generally used in___________?
A. reactors
B. generators
C. transformers
D. all of the above - The operating voltage of supertension cables is up to_________________?
A. 3.3 kV
B. 6.6 kV
C. 11 kV
D. 33 kV - A 3-phase 4 wire system is commonly used on________________?
A. primary transmission
B. secondary transmission
C. primary distribution
D. secondary distribution
