31. Series capacitive compensation on EHV transmission lines is used to

1. 1. reduce the line loading

   
   
   

   2. improve the stability of the system

   
   
   

   3. reduce the voltage profile

   
   
   

   4. improve the protection of the line

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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32. In load flow analysis, the load connected at a bus is represented as

1. 1. constant current drawn from the bus

   
   
   

   2. constant impedance connected at the bus

   
   
   

   3. voltage and frequency dependent source at the bus

   
   
   

   4. constant real and reactive drawn from the bus

   
   
   

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   Normally in power system, the real and reactive power quantities are specified and so the load connected at bus in load flow analysis is represented as constant real and reactive power drawn from the bus.

   Correct Option: D

   Normally in power system, the real and reactive power quantities are specified and so the load connected at bus in load flow analysis is represented as constant real and reactive power drawn from the bus.

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33. If the reference bus is changed in two load flow runs with same system data and power obtained for reference bur taken as specified P and Q in the latter run

1. 1. the system losses will be unchanged but complex bus voltage will change

   
   
   

   2. the system losses will be changed but complex bus voltages remain unchanged

   
   
   

   3. the system losses as well be as complex bus voltage will change

   
   
   

   4. the system losses as well be as complex bus voltage will unchanged

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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34. A lossless radial transmission line with surge impedance loading

1. 1. takes negative VAr at sending end and zero VAr at receiving end

   
   
   

   2. takes positive VAr at sending end and zero VAr at receiving end

   
   
   

   3. has flat voltage profile and unity power factor at all points along it

   
   
   

   4. has sending end voltage higher than receiving end voltage and unity power factor at sending end

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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35. When a d.c source is switched is purely inductive, the current response is

1. 1. an exponentially rising curve

   
   
   

   2. an exponentially decaying curve

   
   
   

   3. a straight line passing through the origin

   
   
   

   4. a straight line off-set from the origin

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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