Exercise: Analog Electronics

Questions for: Analog Electronics

The circuit shown in the figure is that of
A:
non-inverting amplifier
B:
Inverting amplifier
C:
an oscillator
D:
Schmitt trigger
Answer: D
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Which of the following is the common feature between FETs and bipolars?
A:
Have low input impedance
B:
Have low voltage gain
C:
Are difficult to bias
D:
None of them
Answer: D
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Which of the following statement about JFET is true?
A:
In a JFET, gate and source have opposite polarity with respect to drain irrespective of the type of FET
B:
In its schematic symbol for JFET, the arrow always points to p-type material
C:
In an n-channel JFET, the channel is the narrowest under zero gate bias condition
D:
In JFET, gate source cut off voltage is numerically equal to the pinch off voltage
Answer: D
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When negative feedback is used the fractional changes in closed loop gain are desensitized by the factor (1 + Avβ)
A:
True
B:
False
C:
D:
Answer: A
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In a transistor push pull amplifier
A:
there is no dc present in the output
B:
there are no even harmonics in the output
C:
both (a) and (b)
D:
neither (a) nor (b)
Answer: C
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