# If Cc = 10pF then the corner frequency of the amplifier is

1.  2.39 kHz

2.  2.39 MHz

3.  239 KHz

4.  23.9 KHz

4

2.39 MHz

Explanation :
No Explanation available for this question

# The value of R=150Ω,A filter capacitor is connected in parallel with R. The peak output voltage is to be 24V and ripple voltage is to be 24V and ripple voltage is to be no more than 0.5V, at 60hz, The required rms value of Vs and the value of filter capacitance is

1.  24.7V,848.9μF

2.  25V,2667μF

3.  24.7V,848.9µF

4.  25.4V,2667µF

4

25.4V,2667µF

Explanation :
No Explanation available for this question

# In a monostable multivibrator, if a 555 timer is powered with VCC = 15v and assuming that VTH can be varied externally (i.e., need not remain equal to 2/3 VCC). Find the required value of VTH so that the pulse width is increased from 10 μ sec to it is given that C = 1 nF

1.  10.1V

2.  13.35V

3.  3.35

4.  None

4

13.35V

Explanation :
No Explanation available for this question

# The maximum gain of the amplifier is

1.  1.44v⁄v

2.  144v/v

3.  14.4v/v

4.  None of these

4

1.44v⁄v

Explanation :
No Explanation available for this question

# Which of the following represents the condition for oscillation

1.

2.

3.

4.  None

4

Explanation :
No Explanation available for this question

# A non inverting op-Amp. Configuration is shown below. If op-amp has infinite input impedance and zero output resistance then feedback factor β is

1.  R1/R2

2.  R1/R1+R2

3.  R2/R1+R2

4.  None

4

R1/R1+R2

Explanation :
No Explanation available for this question

# A 555 IC is connected as an a stable multi vibrator if RA = 20 K, RB = 80 K? C = 0.01 μF then frequency of oscillation and the duty cycle of the multivibrator respectively

1.  800 Hz, 46%

2.  8 K Hz, 49%

3.  0.8 KHz, 50%

4.  0.8 KHz, 55%

4

0.8 KHz, 55\%

Explanation :
No Explanation available for this question

# The h – parameter model is more commonly used because

1.   The h – parameter can be measured more accurately

2.   The h – parameter do not vary with frequency

3.  The analysis using h – parameter gives the same expressions for the performance measures for all the configurations

4.  The h – parameter model is an accurate representation of the transistor mechanism

4

The h – parameter model is an accurate representation of the transistor mechanism

Explanation :
No Explanation available for this question

# The frequency of oscillation of this oscillator is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.  616v/v

2.  66.77v/v

3.  6.16v/v

4.  61.6v/v

4