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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 13
41.
A transistor is said to be in a quiescent state when
the amplitude of input and output signal is equal
the phase of input and output signal is identical
no signal is applied to the input
the transistor is unbiased
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
According to Barkhausen criteria in order to sustain the oscillations
loop gain of the circuit must be negligible
loop gain of the circuit must be equal to unity
the phase shift around the circuit must be 180°
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
A Wien bridge oscillator uses
negative feedback
positive feedback
both negative and positive feedback
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
In the above case, what will be the value of capacitor to obtain 100 kHz frequency?
0.0065 pF
0.0130 pF
0.0260 pF
0.520 pF
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Equal amplitude ac signals are given as inputs to both inverting and given as inputs to both inverting and non-inverting terminals of an op-amp. The output will be zero when the phase difference between inputs is
0°
90°
180°
270°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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