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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 13
46.
Which of the following can be used to isolate a low impedance from a high impedance source?
Emitter follower
p filter
Darlington pair
Any of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
A class C amplifier uses
high Q tuned circuit
low Q tuned circuit
untuned circuit
either (b) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
In figure
the collector currents of T1 and T2 are equal
the collector current of T1 is more than that of T2
the collector current of T1 is double that of T2
the collector currents of T2 is more than that of T1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
A three-section RC phase shift oscillator has R = 10K ohms and C = 0.001 μF. If the oscillator is to be made variable using the same value of R, what should be the value of capacitor to obtain a frequency if 1 kHz?
636 pF
180 pF
65 pF
30 pF
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
The input to negative clamper has a peak value of Vp. Then in the output the positive and negative peaks are nearly
0 and -2 V respectively
Vp and -Vp respectively
2 Vp and 0 respectively
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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