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Electronics and Communication Engineering - Automatic Control Systems

Exercise : Automatic Control Systems - Section 10
26.
The constant magnitude of G(s) plane are
a family of straight horizontal lines
a family of straight inclined lines with positive slope
a family of straight inclined lines with negative slope
a family of circles
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
For a closed loop system
The imaginary axis intercept of the root loci will be
± j 2.8
± J 0.28
± j 1.14
± j 11.4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Which of the following is correct?
Speed torque characteristics of permanent magnet dc servomotor is more flat than that of wound field dc servomotor
Speed torque characteristics of wound field dc servo- motor is more flat than that of permanent magnet dc servo motor
Speed torque characteristics of wound field and permanent magnet dc servomotor are equally flat
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.

Assertion (A): In an automobile the amount of fuel admitted to the engine is adjusted as per the difference between desired and actual speed.

Reason (R): The control signal is the amount of fuel to be admitted to the engine.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
R is correct but A is wrong
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
A system is highly oscillatory if
gain margin is high
gain margin is close to 1
gain margin is close to 1 or phase margin is zero
gain margin is high and phase margin is 180°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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