Exercise: Automatic Control Systems

Questions for: Automatic Control Systems

In classical analogue, torque is analogous to
A:
current
B:
voltage
C:
charge
D:
voltage gradient
Answer: B
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For the transport lag G(jω) = e-jωT, the phase angle
A:
is constant
B:
varies linearly with frequency
C:
varies linearly with low frequencies only
D:
values as per square law
Answer: B
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The purpose of series quadrature windings in amplidyne is to
A:
neutralize the effect of armature reaction
B:
reduce commutation difficulties
C:
increase the gain
D:
increase response time
Answer: A
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The given figure shows log magnitude versus ω plots of a system for different values of gain. For this system
A:
curve 1 shows highest gain margin and curve 2 shows poorest gain margin
B:
gain margins shown by the three curves are equal
C:
curve 1 shows poorest gain margin and curve 3 shows highest gain margin
D:
curve 3 shows poorest gain margin while curve 1 shows highest gain margin
Answer: C
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A network has . Then
A:
it is lead network
B:
it is lag network
C:
it is lead network if T1 > T2 and lag network T1 < T2
D:
it is lead network if T1 < T2 and lag network T1 > T2
Answer: C
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