# 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||

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