# In the circuit of the given figure, assuming that transistor has hfe=99 and VBE=0.7V, value of collector current Ic of the transistor is approximately

1.  [3.3/3.3]mA

2.  [3.3/(3.3+0.33)]mA

3.  [3.3/33]mA

4.   [3.3/(33+3.3)]mA

4

[3.3/(3.3+0.33)]mA

Explanation :
No Explanation available for this question

# In the circuit shown in the given figure, current gain(b) of the ideal transistor is 10. The operating point of the transistor(V∞, Ic) is

1.  (40V,4A)

2.  (40V,5A)

3.  (0V,4A)

4.   (15V,4A)

4

(0V,4A)

Explanation :
No Explanation available for this question

# If an amplifier with gain of -1000 and feedback of b=-0.1 had a gain change in gain of the feedback amplifier would be

1.  10%

2.  5%

3.  0.2%

4.   0.01%

4

0.2\%

Explanation :
No Explanation available for this question

# A constant current signal across a parallel RLC circuit gives an output of 1.4 volts at the signal frequency of 3.89KHz and 4.1kHz. At frequency of 4kHz, output voltage will be

1.  1 volt

2.  2 volts

3.  1.4 volts

4.  2.8 volts

4

2 volts

Explanation :
No Explanation available for this question

# In the circuit shown in the given figure, the type of feedback used is

1.  Voltage series feedback

2.  Voltage shunt feedback

3.  Current series feedback

4.  Current shunt feedback

4

Voltage shunt feedback

Explanation :
No Explanation available for this question

# An amplifier has an open-loop gain of 100, an input impedance of 1KΩ, and an output impedance of 100Ω. If a feedback network with a feedback factoer of 0.99 is connected in a voltage series feedback mode then new input and output impedance are

1.  10Ω and 1Ω

2.  10Ω and 10KΩ

3.  100KΩ and 1Ω

4.   100KΩ 10KΩ

4

100KΩ and 1Ω

Explanation :
No Explanation available for this question

# The resonant frequency of the wein bridge oscillator of given in figure, is

1.  19597Hz

2.  1592.35Hz

3.  3120.7Hz

4.   4777Hz

4

3120.7Hz

Explanation :
No Explanation available for this question

# RC network shown in the given figure can provide maximum theoretical phase shift of

1.  900

2.  1800

3.  2700

4.  3600

4

1800

Explanation :
No Explanation available for this question

# If an amplifier with resitive negative feedback has two left half planes poles in its open-loop transfer function then amplifier

1.  Will always be unstable at high frequencies

2.  Will be stable for all frequencies

3.  May be unstable, depending upon the feedback factor.

4.   Will oscillate at low frequencies

4

Will be stable for all frequencies

Explanation :
No Explanation available for this question

# In a common emitter amplifier, the unbypassed emitter resistance provides

1.  Voltage-shunt feedback

2.  Current-series feedback

3.  Negative-voltage feedback

4.   Positive-current feedback

4