Important Question Answer For HPSSC Electrician Exam Set-10

 ||Important Subject Related  Question Answer For HPSSC Electrician Exam Set-10||Important Question Answer For HPSSSB Hamirpur Electrician Exam Set-10||

1. 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 =1.47 x 1010 Hz & fβ = 1.33 x 1012 Hz 

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

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

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

2. Negative feedback in an amplifier 

A. Increases noise

B. Reduces bandwidth 

C. Reduces gain 

D. Increase frequency &phase distortion 

 3. In a CB amplifier the maximum efficiency could be 

A. 25% 

B. 99%

C. 50% 

 D. 85% 

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

A. 3.2mA 

B. 4.6mA

C. 2.3mA 

 D. 5.2mA 

 5. 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 

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

A. Channel length modulation 

B. Junction capacitance 

C. Depletion capacitance 

D. Charge storage capacitance 

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

A. voltage controlled current source 

B. Current controlled voltage source 

C. Current controlled Current source 

D. Voltage controlled voltage source 

9. The cascade amplifier is a multistage configuration of 

A. CE-CC 

B. CC-CB

C. CB-CC 

D. CE-CB 

 ||Important Subject Related  Question Answer For HPSSC Electrician Exam Set-10||Important Question Answer For HPSSSB Hamirpur Electrician Exam Set-10||

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