JE Electrical Question Answer For HPSSC Hamirpur Exam Set-2

 

JE Electrical Question Answer For HPSSC Hamirpur Exam Set-2

||JE Electrical Question Answer For HPSSC Hamirpur Exam||Junior Engineer Electrical Question Answer For HPSSCSB Hamirpur Exam||

JE Electrical Question Answer For HPSSC Hamirpur Exam Set-2


11. An npn BJT has gm=38mA/v, cµ =10¯14 F, cπ =10¯13F and DC current gain β0=90.For this transistor fT & fβ are 

A. fT =1.64 x 108 Hz & fβ = 1.47 x 1010 Hz 

B. fT =1.47 x 1010 Hz & fβ = 1.64 x 108 Hz 

C. fT =1.33 x 1012 Hz & fβ = 1.47 x 1010 Hz 

D. fT =1.47 x 1010 Hz & fβ = 1.33 x 1012 Hz  


12. In a CB amplifier the maximum efficiency could be 

A. 99% 

B. 85% 

C. 50% 

D. 25% 


13. The action of JFET in its equivalent circuit can best be represented as a 

A. Current controlled Current source 

B. Current controlled voltage source 

C. Voltage controlled voltage source 

D. voltage controlled current source 


 14. In a p⁺n junction diode under reverse bias , the magnitude of electric field is maximum at

 A. The edge of the depletion region on the p-side 

B. The edge of the depletion region on the n-side 

C. The p⁺n junction 

D. The center of the depletion region on the n-side 


15. A constant current signal across a parallel RLC circuits gives an o/p of 1.4v at the signal frequency of 3.89KHZ and 4.1KHZ. At the frequency of 4KHZ,the o/p voltage will be 

A. 1v 

B. 2v 

C. 1.4v 

D. 2.8v


 16. To prevent a DC return between source and load, it is necessary to use 

A. Resistor between source and load 

B. Inductor between source and load 

C. Capacitor between source and load 

D. Either A or B 


17. Which of the following is not associated with a p-n junction 

A. Junction capacitance 

B. Charge storage capacitance 

C. Depletion capacitance 

D. Channel length modulation 


18. If=0.98, Ico=6µA and Iβ=100µA for a transistor,then the value of Ic will be 

A. 2.3mA 

B. 3.2mA 

C. 4.6mA 

D. 5.2mA 


19. The cascade amplifier is a multistage configuration of 

A. CC-CB 

B. CE-CB 

C. CB-CC 

D. CE-CC 

 

20. Negative feedback in an amplifier 

A. Reduces gain

 B. Increase frequency &phase distortion

 C. Reduces bandwidth 

D. Increases noise





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