81. 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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1. View Hint View Answer Discuss in Forum

   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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82. 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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83. At a particular unbalanced node, the real powers specified are leaving the node: 20 MW, 25 MW, Entering the node: 60 MW, 30 MW. The balance power will be

1. 1. 30 MW leaving the node

   
   
   

   2. 45 MW leaving the node

   
   
   

   3. 45 MW entering the node

   
   
   

   4. 22.5MW entering the node and 22.5 MW leaving the node

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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84. 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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85. The transmission line feeding power on either side of the main transmission line is called

1. 1. Secondary distribution

   
   
   

   2. Secondary transmission

   
   
   

   3. Primary transmission

   
   
   

   4. Primary distribution

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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