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Electronics And Communication Engineering

Consider the following statements regarding the class-B power amplifiers (Complementary symmetry type):

Electronics And Communication Engineering, Exam Questions Papers /
Question: Consider the following statements regarding the class-B power amplifiers (Complementary symmetry type):
[A].

1, 2 and 3

[B].

1, 2 and 4

[C].

1, 3 and 4

[D].

2, 3 and 4

Answer: Option C

Explanation:

No answer description available for this question.

Consider the following statements regarding the class-B power amplifiers (Complementary symmetry type): Read More »

Electronics And Communication Engineering, Exam Questions Papers

In the circuit of figure

Electronics And Communication Engineering, Networks Analysis And Synthesis /
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.

In the circuit of figure Read More »

Electronics And Communication Engineering, Networks Analysis And Synthesis

For a series circuit of R and variable XL the admittance locus is

Electronics And Communication Engineering, Networks Analysis And Synthesis /
Question: For a series circuit of R and variable XL the admittance locus is
[A].

a semicircle in first quadrant

[B].

a semicircle in fourth quadrant

[C].

a straight line in first quadrant

[D].

a straight line in fourth quadrant

Answer: Option B

Explanation:

No answer description available for this question.

For a series circuit of R and variable XL the admittance locus is Read More »

Electronics And Communication Engineering, Networks Analysis And Synthesis

Consider the following statements:To draw a.c. equivalent circuit of a transistors, all

Electronics And Communication Engineering, Exam Questions Papers /
Question: Consider the following statements:To draw a.c. equivalent circuit of a transistors, all
[A].

2 and 4

[B].

1 and 2

[C].

1 only

[D].

3 and 4

Answer: Option C

Explanation:

No answer description available for this question.

Consider the following statements:To draw a.c. equivalent circuit of a transistors, all Read More »

Electronics And Communication Engineering, Exam Questions Papers

For a series circuit of variable R and XL, the impedance locus is

Electronics And Communication Engineering, Networks Analysis And Synthesis /
Question: For a series circuit of variable R and XL, the impedance locus is
[A].

a straight line parallel to X axis in first quadrant

[B].

a straight line parallel to X axis in fourth quadrant

[C].

a straight line parallel to Y axis in second quadrant

[D].

a straight line parallel to Y axis in first quadrant

Answer: Option A

Explanation:

No answer description available for this question.

For a series circuit of variable R and XL, the impedance locus is Read More »

Electronics And Communication Engineering, Networks Analysis And Synthesis

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

Analog Electronics, Electronics And Communication Engineering /
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 .

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

Analog Electronics, Electronics And Communication Engineering

A seven bit (even parity) code 0010001 may have error. The correct code is

Digital Electronics, Electronics And Communication Engineering /
Question: A seven bit (even parity) code 0010001 may have error. The correct code is
[A].

0010001

[B].

1110001

[C].

0011001

[D].

1111110

Answer: Option C

Explanation:

No answer description available for this question.

A seven bit (even parity) code 0010001 may have error. The correct code is Read More »

Digital Electronics, Electronics And Communication Engineering

Why npn-transistors are preferred over pnp-transistors?

Electronics And Communication Engineering, Exam Questions Papers /
Question: Why npn-transistors are preferred over pnp-transistors?
[A].

Leakage current in npn-transistors is less than pnp-transistors

[B].

Mobility of majority carrier in npra-transistors is greater than the mobility of majority carrier in pnp-transistors

[C].

Bias voltage required in npn is less than in/wp-transistors

[D].

Bias voltage required in npn is greater than in pnp-transistors

Answer: Option B

Explanation:

No answer description available for this question.

Why npn-transistors are preferred over pnp-transistors? Read More »

Electronics And Communication Engineering, Exam Questions Papers

A variable resistance R and capacitive reactance XC are fed by an voltage. The current locus is

Electronics And Communication Engineering, Networks Analysis And Synthesis /
Question: A variable resistance R and capacitive reactance XC are fed by an voltage. The current locus is
[A].

a semi circle in 4th quadrant

[B].

a semi circle in first quadrant

[C].

a straight line in 4th quadrant

[D].

a straight line first quadrant

Answer: Option B

Explanation:

No answer description available for this question.

A variable resistance R and capacitive reactance XC are fed by an voltage. The current locus is Read More »

Electronics And Communication Engineering, Networks Analysis And Synthesis