146. A single phase full bridge diode rectifier delivers a load current of 10 A, which is ripple free. Average and rms values of diode currents are respectively—

1. 1. 10 A, 7·07 A

   
   
   

   2. 5 A, 10 A

   
   
   

   3. 5 A, 7·07 A

   
   
   

   4. 7·07 A, 5 A

   
   
   

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   NA

   Correct Option: A

   NA

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147. A single-phase one-pulse diode rectifier is feeding an RL load with freewheeling diode across the load. For conduction angle β, the main diode and freewheeling diode would, respectively, conduct for—
     

1. 1. π, π – β

   
   
   

   2. π, β – π

   
   
   

   3. β, π

   
   
   

   4. β – π, π

   
   
   

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   NA

   Correct Option: B

   NA

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148. In Fig. PIV required for the diode is—
     
     
     

1. 1. 300 V

   
   
   

   2. 100 V

   
   
   

   3. 200 V

   
   
   

   4. 400 V

   
   
   

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   NA

   Correct Option: D

   NA

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149. In Fig. zero centre and ideal PMMC voltmeters M₁ and M₂ will read—
     
     
     
     

1. 1. – 10 V, 10 V

   
   
   

   2. 0, 10 V

   
   
   

   3. – 10 V, 7·07 V

   
   
   

   4. 10 V, 7·07 V

   
   
   

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   NA

   Correct Option: A

   NA

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150. In Fig. an ideal moving iron voltmeter M will read—
     
     
     

1. 1. 7·07 V

   
   
   

   2. 12·25 V

   
   
   

   3. 14·14 V

   
   
   

   4. 20·0 V

   
   
   

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   NA

   Correct Option: B

   NA

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