01) protection of which of the following lines?
• only short transmission lines
• long transmission lines only
• medium transmission lines only
• None of the above
02) If the sinking in an airline increases, the tension in the line
• increase
• Decrease
• not affected
• None of the above
03) The asynchronous connection line is a
• AC power line
• DC transmission line
• 1 or 2
• None of the above
04) Should frequencies be the same on which of the following line to exchange energy from one place to another place?
• Synchronous line
• Asynchronous line
• both 1 and 2
• No need for the same frequency for energy exchange
05) Which of the following statements are true regarding HVDC?
• There is no skin effect on the DC line
• HVDC can use ground for its return path
• Corona loss is greatly reduced in the DC line
• all of the above
06) Which of the following are / are the effects of the crown
• reduces interference
• loss of power decreases
• Increase load current
• all of the above
07) Which of the following are / are the desirable properties of an insulation material?
• High resistance to puncture with flash.
• High relative permittivity
• Both 1 and 2
• Low resistance to flash drilling.
08) The most commonly used material for the insulator is
• glass
• Mica
• Porcelain
• all of the above
09) If the insulation breakdown voltage is high, the insulation thickness is
• high
• Less
• not related to the breaking voltage
• None of the above
10) The dispersed matrix is a matrix containing
• more number of zeros
• more number of memory elements
• Lower number of memory elements
• more number of zeros