Part-1q 1 for the circuit shown determineathe time constant

Assignment Help Electrical Engineering

Reference no: EM13374923

Part-1

Q 1. For the circuit shown, determine

a) The time constant when the switch moves to position 1

b) The mathematical expression of v_c, i_c when the switch moves to position 1

c) v_c & i_c if the switch moves to position 2 at t=100ms

d) The mathematical expression of v_c & i_c when the switch moves to position 3 after it remained for 50ms on position 2.

e) Plot the waveforms of v_c, & i_c showing their behaviors in the time interval from t=0 to t=400ms.

1491_Electrical Circuits.png

Q2. For the given circuit, the switch is closed after the capacitors are fully charged.

a) What would be the initial value of v_c(t) when switch is closed?

b) Determine the time constants in both cases (switch is open, switch is closed).

c) Find v_c(t) & i_c(t) for t=1 m seconds, t=1.8m seconds and t=2.5m seconds

d) Plot the responses of v_c(t) & i_c(t) with time.

2116_Electrical Circuits1.png

Part-2

Q 1. For the circuit shown, determine

a) The time constant z when the switch is closed

b) The inductor and resistor voltages and currents when the switch is closed.

c) The mathematical expression of IL, vL & vR when the switch is open at t=51.1. seconds.

d) v_L & i_L at t=3T

e) Plot the waveforms of i_L & v_L

471_Electrical Circuits2.png

Q2. For the circuit shown, determine

a) The maximum values of i_L & v_L

b) The inductor and resistor voltages and currents when the switch is closed.

c) The mathematical expression for inductor and resistors currents when the switch is open after inductor reaches its maximum current.

d) Resistor voltages at t=3T

e) Plot the waveforms of i_L & v_L.

494_Electrical Circuits3.png

Q3. For the given circuit, the capacitor and inductors have reached the steady state. Determine V_L, I_L & I₂.

1085_Electrical Circuits4.png

Part-3

Q1. Write down the following expressions in terms of sine function:

a. cosα = sin(?)

b. -sinα = sin(?)

c. -cosα = sin(?)

Q2. For the given periodic waveform, Determine

528_Electrical Circuits5.png

a) T b) f c) V_max and v_p-p d) number of cycles shown

Q.3 If v(t) = 300sin(157t), how long in seconds does it take this waveform to complete 1/2 cycle.

Q4. Write the analytical expression for the given waveforms

31_Electrical Circuits6.png

Q5 If a periodic waveform has a frequency of 20Hz, how long in seconds will it takes to complete 5 cycles?

Q6 Find the phase relation between the following signals:

a. v = -5 sin(ωt + 75°) & i = 10 cos(ωt -130°)

b. v = -3 cos(ωt) & i = 8sin(ωt + 55° )

Reference no: EM13374923

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