# At lower half power frequency current in series R-L-C circuit has the phase relation with reference to supply voltage as

2.  450 lag

4.  900 lag

4

Explanation :
No Explanation available for this question

# In an ac circuit having R, L, C in series is operating in lagging power factor; then increase in frequency will be

1.  Reduce the current

2.  Increase the current

3.  (A) and (B) are possible

4.  None of these

4

Reduce the current

Explanation :
No Explanation available for this question

# At lower half power frequency total reactance of the series RLC circuit will be

1.  –R

2.

3.

4.  None of these

4 Explanation :
No Explanation available for this question

# The open circuit voltage ratio V2(S)/V1(S) of the network shown in figure is

1.  1+2S2

2.  1/1+2S2

3.  1+2s

4.  1/1+2s

4

1/1+2S2

Explanation :
No Explanation available for this question

# In series R-L-C circuit Q=1/R√L/C; Circuit is under damped if

1.  Q > 1/2

2.  Q = 1

3.  Q = 1/2

4.  Q < 1/2

4

Q > 1/2

Explanation :
No Explanation available for this question

# What is h(t)

1.  e-αtu(t)

2.  α e-αtu(t)

3.  1/α e-αtu(t)

4.  -αe-αtu(t)

4

α e-αtu(t)

Explanation :
No Explanation available for this question

# What is Zin at resonant frequency

1.  C/RL

2.  L/RC

3.  R/LC

4.  LC/R

4

L/RC

Explanation :
No Explanation available for this question

# A high pass filter is basically A differentiator with low time constant B. A differentiator with high time constant C. An integrator with low time constant D. An integrated with high time constant

1.  differentiator with low time constant

2.  A differentiator with high time constant

3.  An integrator with low time constant

4.  An integrated with high time constant

4

differentiator with low time constant

Explanation :
No Explanation available for this question

# If all the transmission zeros of a network are at finally then it is a

1.  Low pass filter

2.  High pass filter

3.  Band pass filter

4.  Can’t say

4

Low pass filter

Explanation :
No Explanation available for this question

1.  1 and 2

2.  1 and 3

3.  2 and 3

4.  1, 2 and 3

4