# Advanced Problems on Filters – 2 MCQ’s

This set of Network Theory Multiple Choice Questions & Answers (MCQs) focuses on “Advanced Problems on Filters – 2″.

1. In the circuit given below, a dc circuit fed by a current source. With respect to terminals AB, Thevenin’s voltage and Thevenin’s resistance are ____________

a) V_{TH} = 5 V, R_{TH} = 0.75 Ω

b) V_{TH} = 7.14 V, R_{TH} = 2.14 Ω

c) V_{TH} = 7.5 V, R_{TH} = 2.5 Ω

d) V_{TH} = 5 V, R_{TH} = 1 Ω

2. In the circuit given below, the value of R is ____________

a) 12 Ω

b) 6 Ω

c) 3 Ω

d) 1.5 Ω

3. In a parallel RL circuit, 10 A current enters into the resistor R and 15 A current enters into the Inductor L. The total current I is _____________

a) 15.5 A

b) 25.05 A

c) 18.03 A

d) 30.15 A

4. In the circuit given below, M = 1. The resonant frequency is _______________

a) 145.3 Hz

b) 0.1453 Hz

c) 1.453 Hz

d) 14.53 Hz

5. Two network functions are given below.

H_{1} = 1s2+2s+1, H_{2} = 1s3+3s2+3s+1

The frequency response indicates that the filter is ___________

a) Low-pass

b) Band-pass

c) High-pass

d) Band reject

6. The filter which passes all frequencies above fc by attenuating significantly, all frequencies above f_{c} is _______________

a) Low-pass

b) High-pass

c) Band-pass

d) Band-stop

7. A thermistor is used for ____________

a) Over voltage protection

b) Temperature alarm circuit

c) Automatic light control

d) Automatic sensor

8. A particular band-pass function has a network function as H(s) = ss2+2s+1 then, its quality factor Q is ___________

a) 34

b) 12

c) 32

d) 14

9. For a Band Pass Filter, the slope of the filter is given as 80dB/decade. The order of the Band Pass Filter is __________

a) 10

b) 8

c) 4

d) 6

11. For providing a Roll-off greater than 60dB/decade/pole, filters with which characteristics are useful?

a) Butterworth

b) Chebyshev

c) Bessel

d) Butterworth & Bessel

10. In which of the filter circuits given below, will the bandwidth be equal to the critical frequency?

a) Low-pass

b) High-pass

c) Band-pass

d) Band-stop

13. Given a system function H(s) = 1s+10. Let us consider a signal sin 10t. Then the steady state response is ___________

a) 1

b) 2

c) 0

d) 5

12. A Low-pass filter circuit has a cut-off frequency of 50 kHz. The bandwidth of the filter is ______________

a) 24.6 kHz

b) 50 kHz

c) 61.5 kHz

d) 36.9 kHz

14. Current I = – 1 + 2–√ (sin (ωt + 60°)) A is passed through three meters. The respective readings will be?

a) 2–√ A, 2–√ A and 1 A

b) 1 A, 2–√ A and 1 A

c) – 1 A, 2–√ A and 2–√ A

d) -1 A, 1 A and 1 A

15. For a Band Pass Filter, the slope of the filter is given as 40dB/decade. The order of the Band Pass Filter is __________

a) 2

b) 3

c) 4

d) 6