Electronics and Communication Engineering - Networks Analysis and Synthesis

41.
For the circuit in figure, fed by a unit step voltage, vc =
1 - e-t/RC
e-t/RC
et/RC
1
Answer: Option
Explanation:

At t = 0, vc = 0 and at t = ∞, vc = 1. This condition is satisfied only by 1 - e-t/RC.


42.
For the network of figure, z11 =
5/3 Ω
3/2 Ω
2 Ω
2/3 Ω
Answer: Option
Explanation:


43.
In figure
Wave A is lagging wave B by ∠θ
Wave A is leading wave B by ∠θ
Wave A is lagging wave B by ∠θ and the two waves have same rms values
Wave A is lagging wave B by ∠θ and the two waves have different rms values
Answer: Option
Explanation:

Wave A starts its cycle θ° earlier than wave B.


44.
The units for apparent power are watts.
True
False
Answer: Option
Explanation:

Apparent power has units of volt-amperes.


45.
In a series RLC circuit the phase angle θ of impedance Z ∠θ is positive. The circuit will behave as
resistive circuit
RC circuit
RL circuit
either RL or RC circuit
Answer: Option
Explanation:

In RL circuits phase angle of Z is positive.