A Best Way To Crack Gorenment Job Exams

Electrical Engineering Objective Questions { Control System }

22.  The number of forward paths in the signal flow diagram shown below areoX2Fig. 16.10
A. xto----01-6?8

23.  The damping factor and undamped natural frequency for the position control system are respectively given by
A. 2.11J,
B. 2 Bj
C. 241?c.1 Vi
D. 24kB

24.  For a type 1 second order control system, the steady state error to unit ramp input is
A. 2 x wn
B. 2 x/ wn
C. 4 x/ wn
D. 4 xwn

25.  Which of the following system is generally preferred?
A. underdamped
B. overdamped
C. critically damped
D. oscillatory

26.  In a second order system having damping factor t, the ratio of damped frequency wd to natural frequency wn is:
A. IF?42
B.(c) 1/71-2-2-

27.  The Routh array of a characteristic equation is given below. The number of roots lying on the right hand side of s-plane is(d)1/G 14----ox2

28.  When all the terms in a row of Routh array are zero, the characteristic equation has roots on
A. the positive real axis
B. the negative real axis
C. the imaginary axis
D. none of these

Page 4 of 47

« 2 3  4  56 »