IFTM UNIVERSITY, MoradabadQuiz Test for Odd Semester (Session 2013-14)B.Tech 5TH Sem (EC)

SUBJECT: AIC LAB M.M: 20CODE: EEC501 TIME: 1 Hr.Answer all the questions with proper calculations (or explanations) wherever required. Without calculation or explanations marks will be given Zero.

1.In the given circuit, VIN1 equals ______.

2.The rate of change of the output voltage in the given circuit equals ______.

3.A mathematical operation for finding the area under the curve of a graph is called __________.

4.In the given circuit, if Rf is reduced to 8 k, the circuit becomes the ______.

5.The reference voltage for the comparator in the given circuit equals ______.

6.Above the critical frequency (fc) of a low-pass filter, the output voltage gain _______.

7.In order to sustain oscillations in a feedback oscillator, the gain should be _________ so the Acl _______.

8.The given circuit is a two-pole, active ______ filter.

9.The ______________ input makes the summing amplifier circuit possible.

A.virtual ground at the noninverting

B.virtual ground at the inverting

C.low-voltage

D.high-voltage

10.The critical frequency for the active filter in the given circuit is approximately _______.

11.A mathematical operation that determines the rate of change of a curve is called __________.

12.A Wien-bridge oscillator uses _________.

A.positive feedback

B.negative feedback

C.both types of feedback

D.an LC tank circuit

13. State advantages and limitations of active filter over passive filter.14. Design a phase shift oscillator to oscillate at 100 Hz.