CONTROL SYSTEMS QUIZ

Transfer function of zero order hold response is

(1 / s) × (1 - est).

(1 / s) × (1 - e-st).

(s) × (1 - est).

(1 / s) × e-st.

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Which of the following is/are the example of actuator?

Hydraulic motor

Electric motor

All

Pneumatic motor

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If the magnitude of G(jω)H(jω) at phase crossover frequency is 0.5. Find the gain margin of the given system?

0.5

2

4

1

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Given the transfer function of a system. Which of the following characteristics does it have?

any of the above

Under damped

Critical damped

Over damped

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Which of the following is/are the advantages of a closed loop control system?

both 1 and 2.

nether 1 nor 2.

The closed loop systems are accurate.

The closed loop systems are less affected by noise.

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A transfer function has its zero in the right half of the s-plane. The function

is non-minimum phase

is positive real

is minimum phase

will give stable impulse response

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A linear time invariant system, initially at rest when subjected to a unit step input gave response c(t) = te-t (t ≥ 0). The transfer function of the system is

(s+1)2/s

s/(s+1)

s/(s+1)2

1/s(s+1)2

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A linear time invariant system has an impulse response e2t for t > 0 . If initial condition are 0 and input is e3t, the output for t > 0 is

e3t - e2t.

e5t.

e2t + e3t.

e2t - e3t.

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For type 1 system with parabolic input, the steady state error is

zero.

infinite.

finite constant.

indeterminate.

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Type and order of transfer function G (s) = K / {s(s + 2)}

2, 1.

1, 1.

1, 2.

0, 2.

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