Computer Programming MCQs

5739 MCQs  (Page 540 of 574)

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
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
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
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
Which of the following equipment, for regulating the voltage in distribution feeder, will be most economical?
A. static condenser
B. synchronous condenser
C. tap changing transformer
D. booster transformer
In a tap changing transformer, the tappings are provided on__________?
A. primary winding
B. secondary winding
C. high voltage winding
D. any of the above
The use of strain type insulators is made where the conductors are__________?
A. dead ended
B. at intermediate anchor towers
C. any of the above
D. none of the above