1.  Over current relays

2.  Temperature sensitive relays

3.  Thermal relays  

4.  A combination of (a) and (b)

4
Correct Answer :

Temperature sensitive relays


Explanation :
No Explanation available for this question

1.  The lighting voltage  

2.  The switching voltage

3.  Corona  

4.  RI

4
Correct Answer :

The switching voltage


Explanation :
No Explanation available for this question

1.  Type of circuit breaker

2.  Inductance of the system only

3.  Capacitance of the system only

4.  Inductance and capacitance of the system

4
Correct Answer :

Inductance and capacitance of the system


Explanation :
No Explanation available for this question

1.  35 kA           

2.  49 kA             

3.  70 kA             

4.  89 kA 

4
Correct Answer :

89 kA 


Explanation :
No Explanation available for this question

1.  50 kV               

2.  100 kV              

3.  60 kV                 

4.  89 kA

4
Correct Answer :

100 kV              


Explanation :
No Explanation available for this question

1.  Lighting conductor and capacitance are used  

2.  Lighting conductor and lighting arrester are used

3.  Lighting arrester and capacitance are used

4.  Lighting arrester alone is used 

4
Correct Answer :

Lighting arrester and capacitance are used


Explanation :
No Explanation available for this question

1.  100 k             

2.  10 k?                 

3.  5 k?                     

4.  1 k?

4
Correct Answer :

5 k?                     


Explanation :
No Explanation available for this question

1.  2.5 sec                     

2.  1.25 sec                    

3.  1.575 sec              

4.  3.2 sec

4
Correct Answer :

1.575 sec              


Explanation :
No Explanation available for this question

1.  14.2 kHz                      

2.  13.29 kHz                 

3.  10 kHz              

4.  none of these

4
Correct Answer :

13.29 kHz                 


Explanation :
No Explanation available for this question

1.  All breakers

2.  Bulk oil breakers  

3.  Minimum oil breakers  

4.  Air blast circuit breaker

4
Correct Answer :

Air blast circuit breaker


Explanation :
No Explanation available for this question

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