A uniformly-loaded D.C. distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is______________?

Related Mcqs:

1. 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

2. Pin type insulators are generally not used for voltages beyond_________?

   A. 1 kV
   B. 11 kV
   C. 22 kV
   D. 33 kV

3. 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

4. The voltage drop, for constant voltage transmission is compensated by installing__________?

   A. inductors
   B. capacitors
   C. synchronous motors
   D. all of above
   E. none of the above

5. For aluminium, as compared to copper, all the following factors have higher values except:

   A. specific volume
   B. electrical conductivity
   C. co-efficient of linear expansion
   D. resistance per unit length for same cross-section

6. 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

7. The material commonly used for sheaths of underground cables is______________?

   A. lead
   B. rubber
   C. copper
   D. iron

8. 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

9. The spacing between phase conductors of a 220 kV line is approximately equal to________________?

   A. 2 m
   B. 3.5 m
   C. 6 m
   D. 8.5 m

10. The effect of corona can be detected by___________?

    A. presence of ozone detected by odour
    B. hissing sound
    C. faint luminous glow of bluish colour
    D. all of the above