corresponds to the signal flow graph shown below G₁ 1 R(s) Y(s) R(S) Y(s) (b) = G₁ G₂ 1-H₁G₁-H₂G₂ G1 G₂ -H 1-H₁G₁-H₂H₂G2 G₁ G₂ -H₂ R(S) 1+H₁G₁+H₂G₂ Y(s) G₁ G₂ (c) = R(S) Y(s) (d) = R(S) 1-H₁G₁+H₁ H₂ G2 (e) none of pervious answers are correct. Y(s)

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corresponds to the signal flow graph shown below
G
1
R(S)
Y(s)
G₁ G₂
(a)
R(S) 1-H₁G₁-H₂G₂
Y(s)
G₁ G₂
(b) =
R(S)
Y(s)
(c) =
R(S)
Y(s)
(d) =
=
1+H1G₁+H₂G2
G₁ G₂
1-H1G₁-H1H₂G2
G₁ G₂
1-H₁G₁+H₁H₂G2
1
R(S)
(e) none of pervious answers are correct.
-H₂
2
10- In speed control systems, the device used for providing rate feedback voltage is called
(a)potentiometer
(b)synchro transmitter
(c) synchro transformer
(d)tachogenerator
(e) none of pervious answers are correct.
The system is
(a) stable
Q.3/ Choose the correct answer for the following questions:
1- The characteristic equation of a feedback system is given by
s4 +5³ +35² + s-1=0
(b) unstable
(c) marginally stable
(d) conditionally stable
2- The digital control system uses digital signals and a digital computer to control the process
(a) true
(b) false
3. When the complex poles of a control system lie on the imaginary axis, then the system dynamic
(a) oscillates
(a) coupling
(b) forces
(c) friction
(d) stored energy
(b) exponentially decays
(c) exponentially grows
(d) none of pervious answers are correct.
4- Transient response in dynamical systems is basically because of
Transcribed Image Text:corresponds to the signal flow graph shown below G 1 R(S) Y(s) G₁ G₂ (a) R(S) 1-H₁G₁-H₂G₂ Y(s) G₁ G₂ (b) = R(S) Y(s) (c) = R(S) Y(s) (d) = = 1+H1G₁+H₂G2 G₁ G₂ 1-H1G₁-H1H₂G2 G₁ G₂ 1-H₁G₁+H₁H₂G2 1 R(S) (e) none of pervious answers are correct. -H₂ 2 10- In speed control systems, the device used for providing rate feedback voltage is called (a)potentiometer (b)synchro transmitter (c) synchro transformer (d)tachogenerator (e) none of pervious answers are correct. The system is (a) stable Q.3/ Choose the correct answer for the following questions: 1- The characteristic equation of a feedback system is given by s4 +5³ +35² + s-1=0 (b) unstable (c) marginally stable (d) conditionally stable 2- The digital control system uses digital signals and a digital computer to control the process (a) true (b) false 3. When the complex poles of a control system lie on the imaginary axis, then the system dynamic (a) oscillates (a) coupling (b) forces (c) friction (d) stored energy (b) exponentially decays (c) exponentially grows (d) none of pervious answers are correct. 4- Transient response in dynamical systems is basically because of
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