Electronics And Communication Engineering | Networks Analysis And Synthesis

In the circuit of figure

Byadmin July 30, 2022

Question: In the circuit of figure
[A].

Va would always lag Vb

[B].

Va would always lead Vb

[C].

Va and Vb can be in phase

[D].

phase angle between Va and Vb would always be 90°

Answer: Option B

Explanation:

Voltage across inductance leads the current and voltage across capacitance lags the current.

Analog Electronics | Electronics And Communication Engineering

In the graphical analysis of an amplifier circuit, the slope of dc load line depends on

Question: In the graphical analysis of an amplifier circuit, the slope of dc load line depends on
[A].

load resistance only
[B].
collector supply voltage only
[C].
both load resistance and collector supply voltage
[D].
none of the above

Answer: Option A

Explanation:

Slope is .

Read More In the graphical analysis of an amplifier circuit, the slope of dc load line depends on
Electronics And Communication Engineering | Networks Analysis And Synthesis

In a series ac circuit a voltage of 20 V at 25 Hz causes a current of 0.20 A, while the same voltage at 75 Hz causes a current of 0.12 A. The circuit consists of

Question: In a series ac circuit a voltage of 20 V at 25 Hz causes a current of 0.20 A, while the same voltage at 75 Hz causes a current of 0.12 A. The circuit consists of
[A].

R and C in parallel
[B].
R and C in series
[C].
R and L in series
[D].
either (a) or (b)

Answer: Option B

Explanation:

As f increases impedance increases and current decreases in RL circuit.

Read More In a series ac circuit a voltage of 20 V at 25 Hz causes a current of 0.20 A, while the same voltage at 75 Hz causes a current of 0.12 A. The circuit consists of
Electronics And Communication Engineering | Networks Analysis And Synthesis

A series resonant circuit has inductance L. If L is increased, the resonant frequency

Question: A series resonant circuit has inductance L. If L is increased, the resonant frequency
[A].

increases
[B].
decreases
[C].
remains constant
[D].
may increases or decreases

Answer: Option B

Explanation:

. As L increases ωr decreases.

Read More A series resonant circuit has inductance L. If L is increased, the resonant frequency
Electronics And Communication Engineering | Networks Analysis And Synthesis

In figure the switch has been in position 1 for a long time. At t = 0, the switch is moved to position 2. The equation for transient current is

Question: In figure the switch has been in position 1 for a long time. At t = 0, the switch is moved to position 2. The equation for transient current is
[A].

[B].

[C].

[D].

Answer: Option C

Explanation:

When switch is in position 2, time constant is

Read More In figure the switch has been in position 1 for a long time. At t = 0, the switch is moved to position 2. The equation for transient current is
Digital Electronics | Electronics And Communication Engineering

Examine the following truth table. The product of sum from this truth table is

Question: Examine the following truth table. The product of sum from this truth table is
[A].

(X + Y) (X + Y)
[B].
(X + Y) (X + Y)
[C].
(X + Y) (X + Y)
[D].
(X + Y) (X + Y)

Answer: Option D

Explanation:

No answer description available for this question.

Read More Examine the following truth table. The product of sum from this truth table is
Analog Electronics | Electronics And Communication Engineering

A rectifier circuit has load resistance R. It uses a capacitance filter having capacitance C. For low ripple in the output

Question: A rectifier circuit has load resistance R. It uses a capacitance filter having capacitance C. For low ripple in the output
[A].

RC should be 1
[B].
RC should be low
[C].
RC should be high
[D].
RC should be neither low nor high

Answer: Option C

Explanation:

No answer description available for this question.

Read More A rectifier circuit has load resistance R. It uses a capacitance filter having capacitance C. For low ripple in the output

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