A CB amplifier has re = 6 ?, RL = 600 ? and a = 0.98. The voltage gain is 100 60

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics and Communication Engineering ‣ Analog Electronics Comments

Question
A CB amplifier has r_e = 6 ?, R_L = 600 ? and a = 0.98. The voltage gain is
Options
A. 100
B. 600 x 0.98
C. 98
D. 6

Correct Answer

98

Explanation

A CB amplifier has re = 6 ?, RL = 600 ? and a = 0.98. The voltage gain is 100 600 x 0.98 98 6

Analog Electronics problems

Search Results

1. In a CE amplifier the input impedance is equal to the ratio of
Options
A. ac base voltage to ac base current
B. ac base voltage to ac emitter current
C. ac emitter voltage to ac collector current
D. ac collector voltage to ac collector current

2. Gain of the amplifier is 'A'. Then the I/P impedance and O/P impedance of the closed loop amplifier shown below would be
Options
A.
B.
C.
D.

3. Consider the following statements : A clamper circuit
1. adds or subtracts a dc voltage to a waveform
2. does not change the waveform
3. amplifiers the waveform
Which are correct?
Options
A. 1, 2
B. 1, 3
C. 1, 2, 3
D. 2, 3

5. 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

6. A stepper motor is
Options
A. a two phase induction motor
B. is a kind of rotating amplifier
C. is an electromagnetic transducer used to convert an angular position of shaft into electrical signal
D. is an electromechanical device which actuates a train of step angular movements in response to a train of input pulses on one to one basis

8. In the given figure the input is x(t) = A sin ?t. The steady state output y(t) =
Options
A. A sin (?t + ?) where ? = tan^-1 |G(j?)|
B. |G(j?)| A sin [?t + ?G(j?)]
C. |G(j?)| A sin [2?t + ?G(j?)]
D. A G(j?) sin [?t + ?G(j?)]

10. The system in the given figure, has
Options
A. good gain and phase margin
B. poor gain and phase margin
C. good gain margin but poor phase margin
D. poor gain margin but good phase margin

Comments

There are no comments.

More in Electronics and Communication Engineering: