Aluminium has a specific gravity of___________?

In the analysis of which of the following lines shunt capacitance is neglected?

A. Short transmission lines
B. Medium transmission lines
C. Long transmission lines
D. Medium as well as long transmission lines

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

Electro-mechanical voltage regulators are generally used in___________?

A. reactors
B. generators
C. transformers
D. all of the above

Which of the following bus-bar schemes has the lowest cost?

A. Ring bus-bar scheme
B. Single bus-bar scheme
C. Breaker and a half scheme
D. Main and transfer scheme

Owing to skin effect:

A. current flows through the half cross-section of the conductor
B. portion of the conductor near the surface carries more current and core of the conductor carries less current
C. portion of the conductor near the surface carries less current and core of the conductor carries more cur¬rent
D. any of the above
E. none of the above

The corona is considerably affected by which of the following _______________?

A. Size of the conductor
B. Shape of the conductor
C. Surface condition of the conductor
D. All of the above