In figure what is the base current if VBE = 0.7 V 10 mA 9.3 mA 10 ?A 9.3 ?A .

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Question
In figure what is the base current if V_BE = 0.7 V
Options
A. 10 mA
B. 9.3 mA
C. 10 ?A
D. 9.3 ?A

Correct Answer

9.3 ?A

Explanation

In figure what is the base current if VBE = 0.7 V 10 mA 9.3 mA 10 ?A 9.3 ?A .

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Analog Electronics problems

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1. S_i transistor of following figure has a = 0.9 and I_CE= 0, V_EE = 5 V and V_CC = 13 V, then R_E will be if I_EQ = 1 mA
Options
A. 3 k?
B. 4 k?
C. 5 k?
D. 4.3 k?

4. Assertion (A): CE amplifier is the most widely used BJT amplifier
Reason (R): CE amplifier has zero phase difference between input and output
Options
A. Both A and R are correct and R is correct explanation for A
B. Both A and R are correct but R is not correct explanation for A
C. A is correct R is wrong
D. A is wrong R is correct

5. For a base current of 10 ?A, what is the value of collector current in common emitter if ?_dc = 100
Options
A. 10 ?A
B. 100 ?A
C. 1 mA
D. 10 mA

6. The load impedance Z_L of a CE amplifier has R and L in series. The phase difference between output and input will be
Options
A. 180�
B. 0
C. more than 90� but less than 180�
D. more than 180� but less than 270�

7. An amplifier with loop gain A? will be more stable for value of A? as
Options
A. 0.95
B. 0.7
C. 1.2
D. 1.5

8. A bridge rectifier circuit has input of 50 Hz frequency. The load resistance is R_L and filter capacitance is C. For good output wave shape, the time constant R_LC should be at least equal to
Options
A. 10 ms
B. 20 ms
C. 50 ms
D. 100 ms

9. In figure The minimum and maximum load currents are
Options
A. 0 and 60 mA
B. 0 and 120 mA
C. 10 mA and 60 mA
D. 10 mA and 120 mA

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