Question with Answer BSNL - JE 

1. Which one of the following materials has the highest dielectric strength ?
(a) Polystyrene                                                  
(b) Marble
(c) Cotton                                                          
(d) Transformer oil                                         
Ans (b)
2.   Pick the odd one out (one of the following type numbers is an adjustable output regulator).
(a) LM 337                                                                   
(b) LM 7815
(c) LM 7918                                                                 
(d) MC 7812                                                       
Ans (a)
3.   A second order low pass active filter shall have a cut-off frequency, a phase shift between input and output of :
(a) 0°                                                                          
(b) -90°
(c) -45°                                                                
(d) +90°                                                                               
Ans (b)
4.   A bipolar junction transistor has a common base forward short circuit current gain of 0.99. Its common emitter forward short circuit current gain will be :
(a) 50                                                                     
(b) 99
(c) 100                                                             
(d) 200                                                                 
Ans (b)
5.   Ronaldo, who was recently in the news, is a famous :
(a) Badminton player                                         
(b) Soccer superstar
(c) Pop singer                                                           
(d) Politician of Brazil                                     
Ans (b)
6.   The prices of a soccer and T.V are in the ratio 5 : 4. If a scooter costs Rs. 4000 more than the T.V set, the price of T.V set (in Rs.) is :
(a) 12,000                                                              
(b) 14,000
(c) 16,000                                                              
(d) 20,000                                                           
Ans (c)
7.   Find the most similar word in meaning :
Full of extreme violence and unpleasantness
(a) Gory                                                       
(b) Bloody
(c) Fearful                                                   
(d) Filthy                                                             
Ans (a)
8. A problem with class-B push push-pull amplifiers is that they usually suffer from :
(a) Harmonic distortion                                 
(b) Intermodulation distortion
(c) Cross-over distortion                                            
(d) None of these                                           
Ans (c)
9.   One of the following is not a semiconductor material :
(a) Gallium Arseinde                                             
(b) Indium
(c) Germanium                                     
(d) Silicon                                                           
Ans (b)
10.   The DC to DC converter that is referred to as constant power converter is the :
(a) push-pull converter                                  
(b) ringing choke type converter
(c) half, bridge converter                                   
(d) full bridge converter                                               
Ans (b)
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