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
Related Mcqs:
- A conductor, due to sag between two supports, takes the form of____________?
A. semi-circle
B. triangle
C. ellipse
D. catenary - jCorona usually occurs when the electrostatic stress in air around the conductor exceeds?
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 - 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 - 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 - By which of the following systems electric power may be transmitted ?
A. Overhead system
B. Underground system
C. Both A. and (b)
D. None 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 - Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is____________________?
A. 25 percent
B. 50 percent
C. 75 percent
D. 100 percent - As compared to a 2-wire D.C. distributor, a 3-wire distributor with same maximum voltage to earth uses only__________________?
A. 31.25 percent of copper
B. 33.3 percent of copper
C. 66.7 percent of copper
D. 125 percent of copper - On which of the following factors skin effect depends?
A. Frequency of the current
B. Size of the conductor
C. Resistivity of the conductor material
D. All of the above
