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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 3
1.
The circuit given below is:
Band stop filter
Band pass filter
Oscillator circuit
All pass filter
Answer: Option
Explanation:

The given circuit is Band pass filter

.

2.
Rank of the matrix:
3
2
1
4
Answer: Option
Explanation:

The given matrix is equivalent to

,

Thus rank is 1.

3.
His rather casual remarks on politics __________ his lack of seriousness about the subject.
masked
belied
cherish
conserve
Answer: Option
Explanation:

The key words in the statement are 'casual remarks' and 'lack of seriousness'.

The blank should be filled with a word meaning 'showed' or 'revealed'. Hence, 'betrayed' is the correct answer.

4.
The resolution of a 4 bit counting ADC is 0.5 volts. For an analog input of 6.6 volts, the digital output of the ADC will be
1011
1101
1100
1110
Answer: Option
Explanation:

Resolution =

⇒ = 0.5

2n = 14 = (1110)

n = 4 bits.

5.
For the power amplifier circuit shown below, the maximum power dissipated by both output transistor is
9.66 W
30.11 W
31.66 W
33.66 W
Answer: Option
Explanation:

The max. power dissipated by both output transistor is max. P2 = = 31.66 W.

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