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BJT – 1 – 2

6. Which of the following statements is/are correct ?
     I. The DC load line is steeper than AC load line.
    II. BJT is a voltage controlled device.

(a) Statement I
(b) Statement II
(c) Both statements I & II
(d) Either statement I or II

ANSWER

EXPLANATION

7. In which mode of BJT operation are both junction reverse biased :

(a) active
(b) saturation 
(c) cut-off
(d) revers active

ANSWER

EXPLANATION

8. In which mode of BJT operation are both junction forward biased :

(a) active
(b) saturation 
(c) cut-off
(d) revers active

ANSWER

EXPLANATION

9. In a bipolar junction transistor the base region is made very thin so that :

(a) base can be easily biased
(b) base can be easily fabricated
(c) electric field gradient in base is high 
(d) recombination in base region is minimum 

ANSWER

EXPLANATION

10. The current gain of a BJT is :

(a) gm r0
(b) gm

(c)  gm/r0
(d) gm/

ANSWER

EXPLANATION

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