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
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
For transmission of power over a distance of 200 km, the transmission voltage should be_________kv?
(A) 132 kV
(B) 66 kV
(C) 33 kV
(D) 11 kV
Pin type insulators are generally not used for voltages beyond_________?
(A) 1 kV
(B) 11 kV
(C) 22 kV
(D) 33 kV
The current drawn by the line due to corona losses is___________?
(A) non-sinusoidal
(B) sinusoidal
(C) triangular
(D) square
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
The voltage regulation in magnetic amplifier type voltage regulator is effected by__________?
(A) electromagnetic induction
(B) varying the resistance
(C) varying the reactance
(D) variable transformer
Electro-mechanical voltage regulators are generally used in___________?
(A) reactors
(B) generators
(C) transformers
(D) all of the above
The angular displacement between two interconnected stations is mainly due to___________?
(A) armature reactance of both alternators
(B) reactance of the interconnector
(C) synchronous reactance of both the alternators
(D) all of the above