CONTROL SYSTEM SET 19

CONTROL SYSTEM SET 19

1. Factor which cannot be can cancelled from numerator and denominator of G(s) E(s) in
a) Bode plot
b) Nyquist plot
c) Higher frequencies
d) None of these
Ans: (c)
 
2. To study time delay of the system which of the following is used?
a) Nyquist plot
b) Bode plot
c) Routh Hurwitz method
d) Nicholas chart
Ans: (a)
 
3. Intersection of root locus branches with the imaginary axis can be determined by the use of
a) Polar plot
b) Routh’s criterion
c) Nyquist criterion
d) None of these
Ans: (b)
 
4. Closed loop ples are
a) Zeros of 1+G(S). H(s)
b) Zeros of G(s) H(s)
c) Poles of G(s) H(s)
d) Poles of 1 + G(s) H(s)
Ans: (a)
 
5. If gain is zero, then
a) Roots move away from zeros
b) Roots coincide with poles
c) Roots move away from poles
d) None of these
Ans: (b)
 
6. Maximum over shoot is the function of
a) Damping ratio
b) Natural frequency of oscillation
c) Both (a) and (b)
d) Damped frequency of oscillation
Ans: (b)
 
7. If value of gain is increased, then roots of the system will move to
a) Origin
b) Lower frequencies
c) Higher frequencies
d) None of these
Ans: (c)
 
8. Feed back control system are basically
a) Low pass filter
b) High pass filter
c) Band pass filter
d) Band stop filter
Ans: (a)
 
9. In root if 𝓴 is greater than critical value, then increasing 𝓴 will
a) Increase value of the real part of closed loop
b) Decrease value of the real part of closed loop
c) Not change value of the real part of closed loop
d) None of these
Ans: (c)
 
10. A liner system obeys the principle of
a) Homogeneity
b) Reciprocity
c) Superposition and homogeneity
d) None of these
Ans: (c)