Question: When the interconnector between two stations has large reactance?

• 1. the transfer of power will take place with voltage fluctuation and noise
• 2. the transfer of power will take place with least loss
• 3. the stations will fall out of step be¬cause of large angular displacement between the stations
• 4. none of the above

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

• 1. Short transmission lines
• 2. Medium transmission lines
• 3. Long transmission lines
• 4. Medium as well as long transmission lines

Question: For transmission of power over a distance of 500 km, the transmission voltage should be in the range?

• 1. 150 to 220 kV
• 2. 100 to 120 kV
• 3. 60 to 100 kV
• 4. 20 to 50 kV

Question: The effect of corona can be detected by___________?

• 1. presence of ozone detected by odour
• 2. hissing sound
• 3. faint luminous glow of bluish colour
• 4. all of the above

Question: On which of the following factors skin effect depends?

• 1. Frequency of the current
• 2. Size of the conductor
• 3. Resistivity of the conductor material
• 4. All of the above

Question: Constant voltage transmission entails the following disadvantage?

• 1. large conductor area is required for same power transmission
• 2. short-circuit current of the system is increased
• 3. either of the above
• 4. none of the above

Question: In a tap changing transformer, the tappings are provided on__________?

• 1. primary winding
• 2. secondary winding
• 3. high voltage winding
• 4. any of the above

Question: Which of the following equipment, for regulating the voltage in distribution feeder, will be most economical?

• 1. Static condenser
• 2. Synchronous condenser
• 3. Tap changing transformer
• 4. Booster transformer

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

• 1. specific volume
• 2. electrical conductivity
• 3. co-efficient of linear expansion
• 4. resistance per unit length for same cross-section

Question: For transmission of power over a distance of 200 km, the transmission voltage should be_________kv?

• 1. 132 kV
• 2. 66 kV
• 3. 33 kV
• 4. 11 kV