# In the OPAMP based Wein bridge RC-Oscillator shown in the given figure, R2 is invariably a resistor having

1.  negative temperature coefficient

2.  positive voltage dependence

3.  positive temperature coefficient

4.  negative voltage dependence

4

positive temperature coefficient

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# What will be the input independence Zi for the network shown below

1.  560.5

2.  56.05 ?

3.  937 K?

4.  617.7 ?

4

560.5

Explanation :
No Explanation available for this question

# If the step response of an initially relaxed circuit is known, them the ramp response can be obtained by.

1.  integrating the step response

2.  differentiating the step response

3.  integrating the step response twice

4.  differentiating the step response twice

4

integrating the step response

Explanation :
No Explanation available for this question

# An n βn transistor has a beta cut-off frequency fB of 1MHz, and emitter short circuit low-frequency current gain. Β0 of 200. It unity gain frequency fT and the alpha cut off frequency fα respectively are

1.  200 MHz, 201MHz

2.  200 MHz, 199 MHz

3.  199 MHz, 200 MHz

4.  201 MHz, 200 MHz

4

200 MHz, 201MHz

Explanation :
No Explanation available for this question

# if a capacitor is energized by a symmetrical square wave current source, then the steady state voltage across the capacitor will be a.

1.  Square wave

2.  Triangular wave

3.  Step wave

4.  Impulse wave

4

Triangular wave

Explanation :
No Explanation available for this question

# An OPAMP has a slow rate of 5 V/μs. The largest sine wave output voltage possible at a frequency of 1 MHz is

1.  10 π volts

2.  5 volts

3.  5/π volts

4.  5/2π volts

4

5/2π volts

Explanation :
No Explanation available for this question

# The unit step response of a second order linear system with Zero initial states is given by C(t) = 1 + 1.25 exp(-6t) sub (8t – tan-1 1.333), t≥0 The damping ratio and the undamped natural frequency of oscillation of the system are respectively

4

Explanation :
No Explanation available for this question

# The figure shows two different sets of input and output variables for the same two-port resistive network Ix is

1.  -12 A

2.  – 8 A

3.  – 9 A

4.  – 3/2 A

4

– 8 A

Explanation :
No Explanation available for this question

1.  15

2.  30

3.  50

4.  96

4