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ECIL GET 2017 Recruitment: Electronics Section Quiz 6

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Question 1

Consider the following statements in respect of an R-C coupled transistor amplifier:
1) The low frequency response is determined by the transistor junction capacitors.
2) The high frequency response is limited by coupling capacitors.
3) The miller capacitance reduces the gain at high frequencies.
4) As the gain is increased the bandwidth gets reduced.
Which of the above statements are correct?

Question 2

Consider the following statements:
1) A Schmitt trigger circuit can be emitter- coupled bi-stable circuit.
2) Schmitt trigger circuit exhibits hysteresis phenomenon.
3) The output of a Schmitt trigger will be triangular if the input is a square wave.
Which of these statements are correct?

Question 3

In an 8-bit D/A converter, the reference voltage used is 10V. What voltage is
represented by 1010 0001?