Frequency Domain Analysis – 1 – 2

6. For the transfer function

    Mcq series

 the phase cross-over frequency is :

(a) 0.5 rad/sec
(b) 1.732 rad/sec
(c) 0.707 rad/sec
(d) 2 rad/sec

ANSWER

EXPLANATION

7. A constant N-circle having centre at (- 1/2 + j0) in the G-plane, represents the phase angle equal to :

(a) 180°
(b) 90°
(c) 45°
(d) 

ANSWER

EXPLANATION

8. Octave frequency range is given by :

(a) ω1/ω2 = 2
(b) ω1/ω2 = 4
(c) ω1/ω2 = 8
(d) 
ω1/ω2 = 10

ANSWER

EXPLANATION

9. The phase angle for the transfer function

        Mcq series

    at corner frequency is :

(a) – 45°
(b) – 90°
(c) – 135°
(d) – 270°

ANSWER

EXPLANATION

10. Frequency response test is not recommended for system with :

(a) very low time constants
(b) with small time constant
(c) with large time constant
(d) 
any time constant

ANSWER

EXPLANATION

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