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

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

A. Inductor between source and load

B. Resistor between source and load

C. Either A or B

D. Capacitor between source and load

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

10. 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. 2.8v

B. 1v

C. 1.4v

D. 2v

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

Read More: - Himachal Pradesh General Knowledge